Details and Image
|Date||Scale Length||Area of Use
|Polar||Amsler Type 3||Amsler||Switzerland||Brass||ca. 1870's||N/A||General area measurement
Notes: "This is an Amsler Type 3 planimeter, sold by Elliott Bros. in London. Elliott Bros. were the sole agent for Amsler in the UK until 1875, when Stanley won the contract. This planimeter's serial number, 7692, is completely consistent with being pre-1875. "