| Model or Part Number | Catalog & Pricelist Years | Brief Description | Slide Rule Family Index | Indicator Description | Slide Rule Material, or for accessories, what models they fit | Scales on Front Side | Scales on Back Side, or Back of Slide | Back of Mannheim Style Rules, or Special Notes | Case Details | Physical Form | Physical Dimensions | Scale Size | Replacement Indicator Number | Replacement Indicator Glass Number | Magnifier Number | Double Magnifier Number - to be deleted | Replacement Case Number | Sewed Leather Case Number | Magnifier Case Number | Match Numbers - last 4724 |
| 1861 | Xylonite Logarithmic Spiral Curve | 1861 | None | Xylonite | . | . | Spiral drafting curve which can be used to perform logarithmic spiral calculations | Cut clear plastic curve | 4643 | |||||||||||
| 10000 | 1947 | Doric Plastic slide rule with trigonometrical scales divided to represent degrees and minutes | 10000 (1947) | Improved Glass Indicator | Plastic | DF = CF CI C = D L | K A = B ST S = D T | . | Duplex | 12.5cm (5 inch) | TW, 68-2133 | 10W, 68-2188 | CC, CF, 68-2343, 68-2346 | 4001 | ||||||
| 10002 | 1947 | Doric Plastic slide rule with trigonometrical scales divided to represent degrees and minutes | 10000 (1947) | Improved Glass Indicator | Plastic | DF = CF CI C = D L | K A = B ST S = D T | . | Duplex | 25cm (10 inch) | TW, 68-2133 | 10W, 68-2188 | CC, CF, 68-2343, 68-2346 | 4002 | ||||||
| 1740N | 1887 | Thacher's Calculating Instrument | 1740 (1887) | None | . | . | . | . | Polished Mahogany Box | Cylinder inside revolving cage, mounted on stand | 18 inch | 4003 | ||||||||
| 1740 | 1890, 1893, 1895, 1897, 1899 | Thacher's Calculating Instrument | 1740 (1890) | None | . | . | . | . | Polished Mahogany Box | Cylinder inside revolving cage, mounted on stand | 18 inch | 4004 | ||||||||
| 4012 | 1900, 1901, 1903, 1906, 1909, 1913, 1915, 1921, 1922, 1925 | Thacher's Calculating Instrument (O'Leary Collection) | 1740 (1900) | None | . | . | . | . | Polished Mahogany Box | Cylinder inside revolving cage, mounted on stand | 18 inch | 4005 | ||||||||
| N4012 | 1927, 1930, 1934, 1936, 1937, 1939, 1942, 1943, 1944, 1947, 1949, 1952 | Thacher's Calculating Instrument | 1740 (1927) | None | . | . | . | . | Polished Mahogany Box | Cylinder inside revolving cage, mounted on stand | 18 inch | 4006 | ||||||||
| 1741 | 1893, 1895, 1897, 1899 | Thacher's Calculating Instrument, with 3 inch reading glass | 1741 (1893) | None | . | . | . | . | Polished Mahogany Box | Cylinder inside revolving cage, mounted on stand | 18 inch | 4007 | ||||||||
| 4013 | 1900, 1901, 1903, 1906, 1909, 1913, 1915, 1921, 1922, 1925 | Thacher's Calculating Instrument, with 3 inch reading glass | 1741 (1906) | None | . | . | . | . | Polished Mahogany Box | Cylinder inside revolving cage, mounted on stand | 18 inch | 4008 | ||||||||
| N4013 | 1927, 1930, 1934, 1936, 1937, 1939, 1942 | Thacher's Calculating Instrument, with 3 inch reading glass | 1741 (1927) | None | . | . | . | . | Polished Mahogany Box | Cylinder inside revolving cage, mounted on stand | 18 inch | 4009 | ||||||||
| 1742 | 1895, 1897, 1899 | Fuller's Spiral Slide Rule | 1742 (1895) | Indicator bars, possibly of brass | . | . | . | . | Mahogany Box | Cylinder, with movable outer sleeve | . | 4010 | ||||||||
| 4015 | 1900, 1901, 1903, 1906, 1909, 1913, 1915 | Fuller's Spiral Slide Rule | 1742 (1909) | Indicator bars, possibly of brass | . | . | . | . | Mahogany Box | Cylinder, with movable outer sleeve | . | 4011 | ||||||||
| 4015 | 1921, 1925, 1927 | Fuller's Spiral Slide Rule, with table-mountable holder | 1742 (1921) | Indicator bars, possibly of brass | . | . | . | . | Mahogany Box | Cylinder, with movable outer sleeve | . | 4012 | ||||||||
| 1743 | 1895, 1897, 1899 | Charpentier Calculator | 1743 (1895) | Metal Indicator | Metal | . | . | . | None listed | Circular pocket watch | 2.375 Inch | 4013 | ||||||||
| 4020 | 1900, 1901, 1903, 1906, 1909, 1913, 1915, 1921, 1925, 1927, 1930, 1931 | Charpentier Calculator, listed as discontinued in the 1934 pricelist | 1743 (1906) | Metal indicator shaped like an oversized watch hand | . | . | . | . | None listed | Circular pocket watch | 2.375 Inch | 4014 | ||||||||
| 1743 1/2 | 1895, 1897, 1899 | Boucher Calculator, resembles an ordinary stem-winding watch, with an open face (glazed) back and front. | 1743.5 (1895) | Metal watch-style hand | Metal, with glass crystals covering back and front. | . | . | . | Circular pocket watch | . | 4015 | |||||||||
| 4022 | 1900, 1901, 1903, 1906 | Boucher, silvered metal dials | 1743.5 (1900) | Metal watch-style hand | . | . | . | . | None listed | Circular pocket watch | . | 4016 | ||||||||
| 4024 | 1900, 1901, 1903, 1906 | Boucher, enamel, cardboard dials | 1743.5 (1900) | Metal watch-style hand | . | . | . | . | Circular pocket watch | . | 4018 | |||||||||
| 4023 | 1903, 1906 | Boucher, with extra hand | 1743.5 (1903) | Metal watch-style hand | . | . | . | . | None listed | Circular pocket watch | . | 4017 | ||||||||
| 4022-A | 1903, 1906 | Boucher, paper dials | 1743.5 (1903) | Metal watch-style hand | . | . | . | . | None listed | Circular pocket watch | . | 4019 | ||||||||
| 1744 | 1895 | Duplex Slide Rule with arithmetical slide | 1744 (1895) | Brass Runner | engine divided celluloid laminated wood | A = B C = D | A = BI CI = D | "Keuffel & Esser Co. N.Y." is marked just above the second decade of the "A" scale on the back side | Duplex | 25cm (10 inch) | 4020 | |||||||||
| 1744 | 1897 | Duplex Slide Rule with arithmetical slide (Otnes Collection) | 1744 (1897) | Brass Runner | engine divided celluloid laminated wood | A = B C = D | A = BI CI = D | "Keuffel & Esser Co. N.Y." is marked just below the "D" scale, between the 2 and 3 on the front side | Duplex | 25cm (10 inch) | . | . | . | . | . | . | . | 4586 | ||
| 1744 | 1899 | Duplex Slide Rule with arithmetical slide (Rueb Collection) | 1744 (1899) | Brass Runner | engine divided celluloid laminated wood | A = B C = D | A = BI CI = D | "Keuffel & Esser Co. New-York & Chicago." is marked just below the "D" scale, between the 2 and 3 on the front side | Duplex | 25cm (10 inch) | . | . | . | . | . | . | . | 4640 | ||
| 1744 1/2 | 1899 | Duplex (Hanssen Collection) | 1744.5 (1899) | Metal Indicator chisel-type indicator | engine divided celluloid laminated mahogany | A = B C = D | A = BI CI = D | . | . | Duplex | 12.5cm (5 inch) | . | . | . | . | . | . | . | 4022 | |
| 1744A | 1895 | Duplex Slide Rule, with trigonometrical slide | 1744A (1895) | Brass Runner chisel-type indicator | engine divided celluloid laminated mahogany | A = B C = D (Second slide = B C =) | A = BI CI = D (Second slide = S L T =) | "Keuffel & Esser Co. N.Y." is marked just above the second decade of the "A" scale on the back side | Duplex | 25cm (10 inch) | 4682 | |||||||||
| 1744B | 1895 | Duplex Slide Rule, with interchangeable slides both arithmetical and trigonometrical | 1744B (1895) | Brass Runner chisel-type indicator | engine divided celluloid laminated mahogany | A = B C = D (Second slide = B C =) | A = BI CI = D (Second slide = S L T =) | "Keuffel & Esser Co. N.Y." is marked just above the second decade of the "A" scale on the back side | Duplex | 25cm (10 inch) | 4021 | |||||||||
| 1744B | 1897, 1899 | Duplex Slide Rule, with interchangeable slides both arithmetical and trigonometrical (Hanssen Collection) | 1744B (1897) | Brass Runner chisel-type indicator | engine divided celluloid laminated mahogany | A = B C = D (Second slide = B C =) | A = BI CI = D (Second slide = S L T =) | "Keuffel & Esser Co. N.Y." is marked just below the "D" scale, between the 2 and 3 on the front side | . | Duplex | 25cm (10 inch) | . | . | . | . | . | . | . | 4587 | |
| 479 | 1881 | Engineers Slide Rule, no indicator | 1745 (1881) | None | Boxwood, with ivory slide | 10 inch [ A = B B = D ] 25cm | . | Table of guage points for square, cylinder, and globe. Also a table of guage points for pumping engines, and another table for regular polygons. | Closed Frame | 25cm (10 inch) | 4484 | |||||||||
| 479-1 | 1883 | Engineers Slide Rule, no indicator | 1745 (1883) | None | possibly boxwood | . | . | . | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4023 | ||
| 1745N | 1887 | Engineers Slide Rule, old number 479-1 | 1745 (1887) | None | possibly boxwood | . | . | . | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4024 | |
| 1745 | 1890 | Engineers Slide Rule | 1745 (1890) | None | Boxwood | 25cm / A = B B = D | . | # 25cm --> 50cm # | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4487 | |
| 1745 | 1893, 1895 | Slide Rule | 1745 (1893) | None | Boxwood | 25cm / A = B B = D | . | # 25cm --> 50cm # | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4491 | |
| 1745 | 1897, 1899 | Gunter Slide Rule | 1745 (1897) | None | Polished Boxwood | 25cm / A = B B = D | . | # 25cm --> 50cm # | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4492 | |
| 479-2 | 1883 | Engineers Slide Rule | 1746 (1883) | Brass Indicator | possibly boxwood | . | . | . | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4025 | ||
| Unknown Model | 1883 | Engineers Slide Rule (Otnes Collection) | 1746 (1883) | Brass Indicator | Polished Boxwood | 20cm / A = B C = D ] 21cm | = S L T (inverted) = | Made for K&E by Tavernier-Gravet - conversion table on back # 21cm --> 42cm # | . | Closed Frame | 20cm (8 inch) | . | . | . | . | . | . | . | 4623 | |
| 1746N | 1887 | Engineers Slide Rule, old number 479-2 | 1746 (1887) | Brass Indicator | possibly boxwood | . | . | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4026 | ||
| 1746 | 1890 | Engineers Slide Rule | 1746 (1890) | Brass Indicator | engine divided celluloid laminated wood | . | . | # 25cm --> 50cm # | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4488 | |
| 1746 | 1893, 1895 | Mannheim Slide Rule | 1746 (1893) | Brass Indicator | engine divided celluloid laminated wood | 10 inch / A = B C = D ] 25cm | = S L T = | # 25cm --> 50cm # "Keuffel & Esser Co. N.Y." is marked just above the 10 inch scale on the wood margin, and not on the celluloid. | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4489 | |
| 1746 | 1897 | Mannheim Slide Rule (Rueb Collection) | 1746 (1897) | Brass Indicator | engine divided celluloid laminated wood | 10 inch / A = B C = D ] 25cm | = S L T = | # 25cm --> 50cm # "Keuffel & Esser Co. New-York" is marked just below the "D" scale, between the 2 and 3 on the front side | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4585 | |
| 1746 | 1899 | Mannheim Slide Rule (Rueb Collection) | 1746 (1899) | Brass Indicator | engine divided celluloid laminated wood. | 10 inch / A = B C = D ] 25cm | = S L T = | # 25cm --> 50cm # "Keuffel & Esser Co. New-York & Chicago." is marked just below the "D" scale, between the 2 and 3 on the front side | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4641 | |
| 1746 1/2 | 1897 | Mannheim Slide Rule (Otnes Collection, without indicator) | 1746.5 (1897) | Glass Indicator with Metal Frame, two hairlines toward edges of glass | engine divided celluloid laminated wood. Stators have beveled ends. | 10 inch / A = B C = D ] 25cm | = S L T = | # 25cm --> 50cm # "Keuffel & Esser Co. New-York" is marked just below the "D" scale, between the 2 and 3 on the front side | Closed Frame | . | . | . | . | . | . | . | . | 4027 | ||
| 1746 1/2 | 1899 | Mannheim Slide Rule (Suspected to exist) | 1746.5 (1899) | Glass Indicator with Metal Frame, two hairlines toward edges of glass | engine divided celluloid laminated wood. Stators have beveled ends. | 10 inch [ A = B B = D ] 25cm | = S L T = | # 25cm --> 50cm # "Keuffel & Esser Co. New-York & Chicago" is marked just below the "D" scale, between the 2 and 3 on the front side | Closed Frame | . | . | . | . | . | . | . | . | 4027 | ||
| 479-5 | 1883 | Common Slide Rule, with brass slide | 1746a (1883) | None | Wood, with brass slide | A = B B = D | . | . | Closed Frame | unknown | . | . | . | . | . | . | . | 4028 | ||
| 1747 | 1899 | Mannheim Slide Rule | 1747 (1899) | Metal Indicator | engine divided celluloid laminated mahogany | . | . | . | Closed Frame | 12.5cm (5 inch) | . | . | . | . | . | . | . | 4029 | ||
| 1748 | 1890 | Engineer's Slide Rule | 1748 (1890) | Brass Indicator | Engine divided celluloid laminated wood | . | . | . | Closed Frame | 50cm (20 inch) | . | . | . | . | . | . | . | 4030 | ||
| 1748 | 1893, 1895, 1897, 1899 | Mannheim Slide Rule | 1748 (1893) | Brass Indicator | Engine divided celluloid laminated wood | 50cm / A = B C = D ] 20 inch | . | # 50cm --> 100cm # | Closed Frame | 50cm (20 inch) | . | . | . | . | . | . | . | 4490 | ||
| 1748 1/2 | 1897, 1899 | Mannheim Slide Rule | 1748.5 (1897) | Glass Indicator with Metal Frame | engine divided celluloid laminated wood | 50cm / A = B C = D ] 20 inch | . | # 50cm --> 100cm # | Closed Frame | 50cm (20 inch) | . | . | . | . | . | . | . | 4032 | ||
| 1749-1 | 1897 | Student's Slide Rule, with paper facing | 1749 (1897) | Brass Indicator, with thin transparent celluloid marked with a with hairline | Thoroughly seasoned hardwood, backed by stout binder's board, with a special strong and tough white paper facing | A = B C = D | = S L T = | Table of the most frequently occurring proportions and formulas [image in catalog is inverted] | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4033 | ||
| 1749-1 | 1899 | Student's Slide Rule, with paper facing | 1749 (1899) | Brass Indicator, with thin transparent celluloid marked with a with hairline | wood | A = B C = D | Unknown | unkown | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4572 | ||
| 4005N | 1909 | Improved Reckoning Machine | 4005 (1909) | None | . | . | . | . | Mechanical machine | . | . | . | . | . | . | . | . | 4034 | ||
| 4006N | 1909 | Improved Reckoning Machine | 4005 (1909) | None | . | . | . | . | Mechanical machine | . | . | . | . | . | . | . | . | 4035 | ||
| 4007N | 1909 | Improved Reckoning Machine | 4005 (1909) | None | . | . | . | . | Mechanical machine | . | . | . | . | . | . | . | . | 4036 | ||
| 4005 | 1913, 1915, 1921, 1925 | Improved Reckoning Machine, listed as discontinued in the 1925 pricelist | 4005 (1913) | None | . | . | . | . | Mechanical machine | . | . | . | . | . | . | . | . | 4037 | ||
| 4006 | 1913, 1915, 1921, 1922, 1925 | Improved Reckoning Machine, listed as discontinued in the 1925 pricelist | 4005 (1913) | None | . | . | . | . | Mechanical machine | . | . | . | . | . | . | . | . | 4038 | ||
| 4007 | 1913, 1915, 1921, 1925 | Improved Reckoning Machine, listed as discontinued in the 1925 pricelist | 4005 (1913) | None | . | . | . | . | Mechanical machine | . | . | . | . | . | . | . | . | 4039 | ||
| 4008 | 1952 | Elemoto Dimension Adder & Subtractor | 4005 (1952) | None | Mechanical machine | . | . | . | . | . | . | . | 4504 | |||||||
| 4010 | 1952 | Stima Calculator | 4005 (1952) | None | Mechanical machine | . | . | . | . | . | . | . | 4505 | |||||||
| 4016 | 1906 | Sperry, watch style, geared differently | 4016 (1906) | Metal watch-style hand | . | . | . | Patent Date October 25, 1904, with round stem and bail, two push buttons at 11 and 1 | None listed | Circular pocket watch | 2.125 inch | . | . | . | . | . | . | . | 4040 | |
| 4017 | 1906 | Sperry, watch style, geared the same | 4017 (1906) | Metal watch-style hand | . | . | . | Patent Date October 25, 1904, with round stem and bail, two push buttons at 11 and 1 | None listed | Circular pocket watch | 2.125 inch | . | . | . | . | . | . | . | 4041 | |
| 4017 | 1909 | Sperry, watch style, geared the same (Rueb Collection) | 4017 (1909) | Metal watch-style hand | . | . | . | Patent Date October 25, 1904, with two wheels on stem, and fob loop at 8 o'clock | None listed | Circular pocket watch | 2.125 inch | . | . | . | . | . | . | . | 4651 | |
| 4017 | 1913, 1915, 1921, 1922, 1925, 1927, 1930, 1934, 1936, 1937, 1939 | Sperry, watch style, geared the same (Rueb Collection) | 4017 (1913) | Metal watch-style hand | . | . | . | Patent Date December 26, 1911, with two wheels on stem, and fob loop at 8 o'clock | None listed | Circular pocket watch | 2.125 inch | . | . | . | . | . | . | . | 4653 | |
| 4018 | 1909 | K&E Circular Calculator | 4018 (1909) | Metal watch-style hand | . | . | . | Patent Appl. For, fob loop at 9 o'clock | None listed | Circular pocket watch | 2.125 inch | . | . | . | . | . | . | . | 4042 | |
| 4018 | 1913, 1915, 1921, 1925, 1927 | K&E Circular Calculator | 4018 (1913) | Metal watch-style hand | . | . | . | Patented, fob loop at 9 o'clock | None listed | Circular pocket watch | 2.125 inch | . | . | . | . | . | . | . | 4652 | |
| 4019 | 1903, 1906 | Goodchild Mathematical Chart (Reproduction in Chamberlain Collection) | 4019 (1903) | None | Stout Paper | . | . | . | None listed | Paper chart | . | . | . | . | . | . | . | . | 4043 | |
| 4019A | 1903, 1906 | Goodchild Mathematical Chart | 4019 (1903) | None | Neatly mounted on fine quality drawing board, (showing both sides of chart) with protective coating | . | . | . | None listed | Paper chart | . | . | . | . | . | . | . | . | 4044 | |
| 4019B | 1903, 1906 | Triangular Rule for Goodchild (Chamberlain Collection) | 4019 (1903) | Boxwood | Boxwood | . | . | . | None listed | Triangular rule | . | . | . | . | . | . | . | . | 4045 | |
| 4028 | 1900, 1901, 1903, 1906 | Gunter | 4028 (1906) | None | boxwood | 25cm / A = B B = D | = S T L = | # 25cm --> 50cm # | None listed | Closed Frame | 25cm (10 inch) | . | . | . | . | . | . | . | 4046 | |
| 4030 | 1900, 1901 | K&E Patent Adjustable (Mannheim) Slide Rule | 4030 (1900) | Brass Indicator | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | = S T L = | Subdivided as close as a 10 inch rule | Sewed Leather Sheath | Closed Frame | 12.5cm (5 inch) | . | . | . | . | . | . | . | 4047 | |
| 4031 | 1900, 1901 | Mannheim Adjustable | 4031 (1901) | Two Line Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | = S T L = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Sheath | Closed Frame | 12.5cm (5 inch) | A, 99-6801 | 1, 1W, 99-6813 | O | OM | 4048 | ||||
| 4031 | 1903, 1906, 1909, 1913 | Mannheim Adjustable (Castleberry Collection) | 4031 (1903) | Glass Indicator with Metal Frame, Two Line indicator was optional | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | =S L T = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Case | Closed Frame | 12.5cm (5 inch) | A, 99-6801 | 1, 1W, 99-6813 | O | OM | 4049 | ||||
| 4031 | 1914 | Mannheim Adjustable (Rueb Collection) (McCoy Collection) | 4031 (1914) | Frameless Glass Indicator with metal indicator bars | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | =S L T = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Case | Closed Frame | 12.5cm (5 inch) | A, 99-6801 | 1, 1W, 99-6813 | O | OM | 4519 | ||||
| 4031 | 1915, 1921 | Mannheim Adjustable (Rueb Collection) (O'Leary Collection) | 4031 (1915) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | =S L T = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Case | Closed Frame | 12.5cm (5 inch) | A, 99-6801 | 1, 1W, 99-6813 | O | OM | 4050 | ||||
| 4031S | 1922 | Mannheim Adjustable (O'Leary Collection) | 4031 (1922) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | =S L T = | K&E conversion table | Sewed Leather Sheath | Closed Frame | 12.5cm (5 inch) | A, 99-6801 | 1, 1W, 99-6813 | O | OM | 4051 | ||||
| 4031S | 1925, 1927, 1928, 1930, 1934, 1936, 1937, 1939 | Mannheim Adjustable (Rueb Collection) (McCoy Collection) | 4031 (1925) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | =S L T = | NBS Circular 47 conversion table | Sewed Leather Sheath | Closed Frame | 12.5cm (5 inch) | A, 99-6801 | 1, 1W, 99-6813 | O | OM | 4052 | ||||
| 4032 | 1900, 1901 | Mannheim | 4032 (1901) | Indicator with reading lens | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | =S T L = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Sheath | Closed Frame | 12.5cm (5 inch) | 4688 | ||||||||
| 4032 | 1903, 1906 | Mannheim | 4032 (1901) | Indicator with reading lens | engine divided celluloid laminated mahogany | 5inch / A =B C = D ] 13cm | =S L T = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Sheath | Closed Frame | 12.5cm (5 inch) | 4053 | ||||||||
| 4035 | 1906, 1909, 1913 | Patent Adjustable (Mannheim) (O'Leary Collection) | 4035 (1906) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 8inch / A =B C = D ] 21cm # Pat. June 5, 1900 # | =S L T = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Sheath | Closed Frame | 20cm (8 inch) | B, 99-6802 | 2, 2W, 99-6814 | P | PM | 4054 | ||||
| 4035 | 1914 | Patent Adjustable (Mannheim) | 4035 (1914) | Frameless Glass Indicator with metal indicator bars | engine divided celluloid laminated mahogany | 8inch / A =B C = D ] 21cm | =S L T = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Case | Closed Frame | 20cm (8 inch) | B, 99-6802 | 2, 2W, 99-6814 | P | PM | 4520 | ||||
| 4035 | 1915, 1921 | Patent Adjustable (Mannheim) (Rueb Collection) | 4035 (1915) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 8inch / A =B C = D ] 21cm | =S L T = | K&E conversion table (subdivided as closely as the 10 inch 4041) | Sewed Leather Case | Closed Frame | 20cm (8 inch) | B, 99-6802 | 2, 2W, 99-6814 | P | PM | 4056 | ||||
| 4035S | 1922, 1925 | Mannheim Adjustable | 4035 (1922) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 8inch / A =B C = D ] 21cm | =S L T = | K&E conversion table | Sewed Leather Case | Closed Frame | 20cm (8 inch) | B, 99-6802 | 2, 2W, 99-6814 | P | PM | 4057 | ||||
| N4035S | 1927, 1928, 1930, 1936 | Mannheim Adjustable | 4035 (1927) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 8inch / A =B C = D ] 21cm | =S L T = | . | Sewed Leather Case | Closed Frame | 20cm (8 inch) | B, 99-6802 | 2, 2W, 99-6814 | 4085-B, 4185-B, 4185-1, 68-2230 | P | PM | 4058 | |||
| N4035S | 1937, 1939 | Mannheim Adjustable | 4035 (1937) | Improved Glass Indicator | engine divided celluloid laminated mahogany | 8inch / A =B C = D ] 21cm | =S L T = | . | Sewed Leather Case | Closed Frame | 20cm (8 inch) | E, 68-2139 | 4, 4W, 68-2191 | 4085-B, 4185-B, 4185-1, 68-2230 | P | PM | 4059 | |||
| 4040 | 1901 | Mannheim (Rueb Collection) | 4040 (1901) | Metal Indicator | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table #27cm - 52cm# Marked "PAT. June 5, 1900" in well. Has the three screw adjustable feature | Two part hard case | Closed Frame | 25cm (10 inch) | 4060 | ||||||||
| No Number on rule | 1900? | Mannheim "American", (O'Leary Collection) | 4041 (1900) | Glass Indicator with Metal Frame | engine divided celluloid laminated blond hardwood, with printed inch and cm rules. | 10inch / A =B C = D ] 26cm | =S L T = | K&E conversion table #26cm - 51cm# Marked "PAT APPLD FOR" in well. Has the three screw adjustable feature | Two part hard case | Closed Frame | 25cm (10 inch) | 4584 | ||||||||
| Unknown | 1900? | Mannheim "American", (John Prince Collection) | 4041 (1900) | Glass Indicator with Metal Frame | engine divided celluloid laminated blond hardwood, with printed inch and cm rules. | 10inch / A =B C = D ] 26cm | =S L T = | K&E conversion table #26cm - 51cm# Non-adjustable | Two part hard case | Closed Frame | 25cm (10 inch) | 4630 | ||||||||
| 4041 | 1901 | Mannheim Adjustable (O'Leary Collection) | 4041 (1901) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 26cm | =S L T = | K&E conversion table #26cm - 51cm# No model number shown | Morocco Case | Closed Frame | 25cm (10 inch) | 4658 | ||||||||
| Unknown | 1902 (?) | Mannheim Adjustable (Rueb Collection) | 4041 (1902) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 26cm | =S L T = | K&E conversion table #26cm - 51cm# No model number shown Keuffel & Esser Co. NY on left end of slide | Two part hard case | Closed Frame | 25cm (10 inch) | 4660 | ||||||||
| Unknown | 1902 (?) | Mannheim Adjustable (Rueb Collection) | 4041 (1902) | Optional Two Line Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 26cm | =S L T = | K&E conversion table No model number shown Keuffel & Esser Co. NY on left end of slide | Two part hard case | Closed Frame | 25cm (10 inch) | 4659 | ||||||||
| 4041 | 1903 | Mannheim Adjustable (Rueb Collection) | 4041 (1903) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table #27cm - 52cm# No model number shown | Two part hard case | Closed Frame | 25cm (10 inch) | 4655 | ||||||||
| 4041 | 1906 | Mannheim Adjustable (O'Leary Collection) | 4041 (1906) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table #27cm - 52cm# No model number shown | Two part hard case | Closed Frame | 25cm (10 inch) | 4061 | ||||||||
| 4041 | 1908 (?) | Mannheim Adjustable (Guare Collection) | 4041 (1908) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table #27cm - 52cm# <4041> on left end of slide | Two part hard case | Closed Frame | 25cm (10 inch) | 4678 | ||||||||
| 4041 | 1909 | Mannheim Adjustable (O'Leary Collection) | 4041 (1909) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table | Two part hard case | Closed Frame | 25cm (10 inch) | 4656 | ||||||||
| 4041 | 1909 | Mannheim Adjustable (Castleberry Collection) Special Order | 4041 (1909) | Glass Indicator with Decimal Pointer (model # 4086) (Special Order Option) | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table | Two part hard case | Closed Frame | 25cm (10 inch) | 4680 | ||||||||
| 4041S | 1909 | Mannheim Adjustable | 4041 (1909) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table | Sewed Leather Sheath | Closed Frame | 25cm (10 inch) | 4063 | ||||||||
| 4041 | 1913 | Mannheim Adjustable | 4041 (1913) | Glass Indicator with Metal Frame | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 25cm | =S L T = | K&E conversion table | Morocco Case | Closed Frame | 25cm (10 inch) | 4064 | ||||||||
| 4041 | 1914 | Mannheim Adjustable (O'Leary Collection) | 4041 (1914) | Frameless Glass Indicator with metal indicator bars | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 25cm | =S L T = | K&E conversion table | Morocco Case | Closed Frame | 25cm (10 inch) | D, 99-6804 | 3, 99-6815 | 4483 | ||||||
| 4041 | 1915 | Mannheim Adjustable | 4041 (1915) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 25cm | =S L T = | K&E conversion table | Morocco Case | Closed Frame | 25cm (10 inch) | D, 99-6804 | 3, 99-6815 | 4066 | ||||||
| 4041 | 1921 | Mannheim Adjustable (Guare Collection) | 4041 (1921) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table, white face in well with Pat June 5, 1900 | Two part hard case | Closed Frame | 25cm (10 inch) | D, 99-6804 | 3, 99-6815 | 4518 | ||||||
| 4041 | 1921, 1922 | Mannheim Adjustable (Rueb Collection) Special Order | 4041 (1921) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 25cm | =S L T = | K&E conversion table, special order with Quotient +1 and Product -1 on right of slide | Two part hard case | Closed Frame | 25cm (10 inch) | D, 99-6804 | 3, 99-6815 | 4654 | ||||||
| 4041 | 1921, 1922 | Mannheim Adjustable (O'Leary Collection) Special Order | 4041 (1921) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 25cm | =S L T = | K&E conversion table, special order with Quotient +1 and Product -1 on right of slide | Sewed Leather Case | Closed Frame | 25cm (10 inch) | D, 99-6804 | 3, 99-6815 | 4676 | ||||||
| 4041 | 1922 | Mannheim Adjustable (Guare Collection) (Castleberry Collection) | 4041 (1922) | Frameless Glass Indicator with plastic indicator bars | engine divided celluloid laminated mahogany | 10inch / A =B C = D ] 27cm | =S L T = | K&E conversion table, Exposed wood in well.Pat June 5, 1900 below D scale after 3 | Two part hard case | Closed Frame | 25cm (10 inch) |