Index of K&E Catalogs
Planimeter Cross Reference Index
Link to Index of K&E Collection

K&E 4210/4211/4212 Family of Polar Planimeters

4210 Polar Planimeter

• 4210 ------- Older style case without multiplier wheel, probably pre 1920's. No manfacturer's location. Serial # 570

4211 Polar Planimeter

• 4211 ------- Replacement of 4110 with multiplier wheel after 1927. Has the word "GERMANY" stamped on the pole weight. Serial # 2037

4212 Polar Planimeter

• 4212 ------- Older style case with multiplier wheel, probably pre 1920's.
• 4212 ------- Newer style case with multiplier wheel. No manfacturer's location. No serial number.