Descriptive catalogue 1914 : Frost & Adams Co. importers and dealers in artists' materials, architects', engineers' draughtsmen's supplies, mathematical instruments and pyrography requisites. (1914)
Frost & Adams · Frost & Adams · leaf 562
le, in Polished Mahogany Case,with Directions each. $28.00 This instrument has improvement over the regular Amskr Planimeter.The flange of the roller wheel is at the centre of Wheel axis, thus dis-tributing the wear. The horizontal disc is so placed that it is alwaysvisible. The tracer-arm is… … 4225 4236. Polar Planimeter < Amslers pattern I Herman Silverlike 4220, btt1 with special device for rapidly findingthe m< an height of Indicator Diagrams seepagein Mahogany Case, with DirectionsDirection the Polar Planimeter. by Wm Cox) each. |30.00.25 • » FROST & ADAMS COMPANY, BOSTON…
Artists' materials · Drawing instruments · Paint
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