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 567
d train of record-ing wheels which renders the moment of inertia of the figure measured Integrators Nos. 4,_K<> and 42fS8 are practically the same instruments asNos. 4280 and 4282, but built on a larger scale so that they measure pro-portionately larger figures by one operation Rails of other… … NO. 4295 4295. Coradis Mechanical Integraph, German Silver andBrass, with Sniveling Pen and Pencil Points, withTesting Rule, in Walnut Case with Lock and Key each,|157.50 Like the Mechanical Integrators, the Integraph has proved in a com-paratively very short time to be an aid of no small…
Artists' materials · Drawing instruments · Paint
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