Collection of pages from K&E catalogs for the 400 family of Polar Planimeters

Model 400 from the 1881 catalog


The early catalogs do not have a good description of this planimeter.

The following models are part of the 400 family:


Of the catalogs available the 400 Polar Planimeter family first appeared in the 1878 catalog.

Links to catalog pages for the 400 family of planimeters: