Index of K&E Catalogs
Planimeter Cross Reference Index

Collection of pages from K&E catalogs for the 4235 family of Polar Planimeters

Description:

The 4235 is an Amsler style polar planimeter with an adjustable tracer arm and means to measure mean height of indicator diagrams. Refer to page 313 of the 1915 catalog for a good description of the instrument.

The previous page in the 1915 catalog explains the method of finding the mean height of indicator diagrams with the 4235.

The following models are part of the 4235 family:

• 4235 ------ Polar Planimeter with multiplier wheel and mean height calculation.
• N4235 ---- A 4235 "somewhat changed"..

History:

Of the catalogs available the 4235 polar planimeter first appeared in the 1895 catalog.

• 1901 -- The 4235 was first introduced.
• 1939 -- The 4235 was changed to N4235 and was last mentioned in the 1939 price list for the 1936 catalog.

Links to catalog pages for the 4235 family of planimeters:

• 1901 1903 1906 1909 1913 1915 1921 1927b 1936 1939