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
|16.50 The Horizontal Registering Wheel registers 10 revolutions of the Measuring Wheel, so that areas of figures up to LOO square inches can be measured. The areas of small drawings made to scale may be obtained by reduction •The improvement of the Needle Point consists in having a weightattached… … 4220 4220. Polar Planimeter I Amslers pattern | German Silver,Adjustable Tracer-Arm with Index Marks for -JRatios, and with Clamp and Slow-Motion Screw.Improved Needle-Pole, in Polished Mahogany Case,with Directions each. $28.00 This instrument has improvement over the regular Amskr Planimeter.The…
Artists' materials · Drawing instruments · Paint
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