K&E 4058 Mannheim Slide Rules

1749-1 --- (1897-1899)

	A = B C = D   
	= S L T = --- (L scale increases to the left)

Students Slide Rule in the 1897 and 1899 catalogs.

4058 --- (1915-1922)

	A = B C = D   
	= S L T = --- (L scale increases to the left)

Name on rule is "Student's Slide Rule". The boxes for these rules are made of simple cardboard with printing directly on them.

4058 --- (1915-1922)

	A = B C = D   
	= S L T = --- (L scale increases to the right)

Name on rule is "Beginner's Slide Rule". The boxes for these rules are made of simple cardboard with printing directly on them.


	

4058 --- (1924? Probably a transition variant)

	A = B C = D   
	= S L T = --- (L scale increases to the right)

Name on rule is "Student's Slide Rule". This rule has the cursor and case of the later 4058C.

4058C --- (1925-1941)

	A = B C = D   
	= S L T = --- (L scale increases to the right)

Name on rule is "Beginner's Slide Rule".


	

The 3 rules below are the same except there are variations in their construction.

4058D --- (1942)

	A = B C = D   
	= S L T = --- (L scale increases to the right)

The rule below was shown only in the 1942 catalog.

4058W --- (1930-1934)

	A = B C = D   
	= S L T = --- (L scale increases to the right)

4058W --- (1936-1943)

	A = B C = D   
	= S L T = --- (L scale increases to the right)

N4058W --- (1944-1953)

	A = B CI C = D K  
	= S L T = --- (L scale increases to the right)

N4058W --- (1954-1959)

	A = B CI C = D K  
	= S L T = --- (L scale increases to the right)

4059 --- (1939-1941)

	A = B C = D   

8858 --- WWII not in catalogs

	A = B C = D   
	= S L T = --- (L scale increases to the right)

4158 --- (1960?) Not in catalogs. Appears to be early K-12 Prep rule

	K A = B S CI T C = D L   --- (L scale increases to the right)

K12 Prep --- (1962-1972)

	K A = B S CI T C = D L   --- (L scale increases to the right)