Polar planimeter, Amsler's
1876
Polar planimeter
Planimeter in fitted box
Box, for Amsler electrically registering current meter
1915
Box, for battery, for Amsler electrically registering current meter
1915
Amsler's integrator
Amsler integrator (without rail) engraved: "J.Amsler 106" and "Julio F.Sorzano
Integraph by J.Amsler with wooden case. From Royal Aircraft Establishment
1910-1920
Amsler's integrator; in case with rail.
1856-1890
Amsler-Laffon tensile testing machine
circa 1890
Amsler integrator in box
Photograph of Amsler current meter by Stanley
1915
Amsler electrically registering current meter with case and battery box
1913-1916
Amsler Electrically Registering Water Current Meter, 1913-16
1913-1916