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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Polar
Amsler Type 4
Amsler
Switzerland
German silver
ca. 1890's
N/A
General area measurement
Notes:
"This is an Amsler Type 4 planimeter that was sold through the London office of Crosby Steam Gage & Valve Co. The serial number is 18770, indicating it is fairly early."
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