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 563
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… … each, $33 39 4230. Improve.l Polar Planimeter. German Silver. Ad justableTracer-Arm fully graduated, with Vernier, Clampand Slow-Motion Screws, Ball-Pole, Pole-WeightBalancing Weight, Testing Disc and Table of Set-tings for U.S. Standard and Metric Measures, inPolished Mahogany Case, to hold…
Artists' materials · Drawing instruments · Paint
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