Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Allbrit A8031 or Q59
W.F. Stanley
Black painted brass and German silver
1930's to 1960's
Large area measurement

Notes: "This is the larger version of Stanley's adjustable (""sliding bar"") polar planimeter, model A8031 in early catalogs and Q59 in later catalogs. On the standard size planimeter the pole and tracing arms are approximately 8"" and 9"" long. On this planimeter they are 11"" and 16"" long respectively. Because of the larger areas that will be measured, the multiplier wheel is geared down and counts up to 25 revolutions of the tracing wheel, vs. 10 on the standard size model. Both a checking rule and magnifier (to read the vernier) are included."

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