Item MA12 - American Steam Gauge Co. (Boston) Amsler Polar Planimeter. IOB
style of polar planimeter was developed by Jacob Amsler in Switzerland about
1854. By 1859 these small, very useful tools were being used to integrate the
area enclosed by complex closed lines and were being produced by The American
Steam Gauge Co. of Boston. This firm was founded in 1851, and produced Amsler
planimeters throughout the remainder of the 19th century, at least.
This handy tool is in its original plush lined case, and appears to be
functional and in fine condition. A nearly identical one is in Harvardís
Collection of Historical Scientific Instruments, and is marked with the serial
number, 3055. It can be seen
here. This example offered here is an earlier one, with the serial number
876. It is an historical instrument, in working shape and in great condition.
Price - $50.00
RETURN to forsale list