Collection of pages from K&E catalogs for the 4240 family of Polar Planimeters
The 4240 is a polar planimeter with an adjustable tracer arm and means to measure mean height of indicator diagrams. Refer to page 314 of the 1915 catalog for a good description of the instrument.
The following models are part of the 4240 family:
- 4240 ------ Polar Planimeter with multiplier wheel and mean height calculation.
- 4240 1/2 -- Polar Planimeter with multiplier wheel without mean height calculation.
Of the catalogs available the 4240 polar planimeter first appeared in the 1901 catalog.
Links to catalog pages for the 4240 family of planimeters: