Index of K&E Catalogs
Planimeter Cross Reference Index

Collection of pages from K&E catalogs for the 4225 family of Polar Planimeters

Description:

The 4225 is an Amsler style polar planimeter with means to measure mean height of indicator diagrams. Refer to page 311 of the 1913 catalog for a good description of the instrument.

The next page in the 1913 catalogs explains the method of finding the mean height of indicator diagrams with the 4225.

The following models are part of the 4225 family:

• 1112 ------ Polar Planimeter with multiplier wheel and mean height calculation.
• 4225 ------ Polar Planimeter with multiplier wheel and mean height calculation.

History:

Of the catalogs available the 4225 polar planimeter first appeared in the 1895 catalog.

• 1895 -- The 1112 was first shown in the 1895 catalog.
• 1901 -- The 1112 model number was converted to 4225.
• 1927b - The 4225 was last shown in the 1927 catalog.

Links to catalog pages for the 4225 family of planimeters:

• 1895 1901 1903 1906 1909 1913 1915 1921 1927b