Collection of pages from K&E catalogs for the 4215 family of Radial Planimeters
Description:
The Radial Planimeter is specifically designed for finding the mean value of circular indicator diagrams.
The following models are part of the 4215 family:
- 4208 ------ Radial Planimeter with multiplier wheel (1936 catalog only)
- 4215 ------ Radial Planimeter with multiplier wheel.
- 62 0100 --- Radial Planimeter with multiplier wheel.
History:
The 4215 Radial Planimeter first appeared in the 1921 catalog.
- 1921 -- The 4215 was first shown in the 1921 catalog.
- 1936 -- The 4215 was shown as a 4208. The reason is not clear
- 1948 -- The 4215 model numbers returns in the 1948 price list for the 1944 catalog. The description is the same.
- 1962 -- The model number was changed to 62 0100.
- 1972 -- The mechanism was in an enclosed frame.
Links to catalog pages for the 4215 family of planimeters: