Price list of drawing materials, architects and engineers, supplies, blue process papers, etc (1886)
Soltmann, E. G., New York. [from old catalog] · New York, Holt brothers · leaf 116
revent the warping of the pine, the board is sawed half way through at about everytwo inches, and for the purpose of allowingthe board to contract and expand, the cross-barsare not glued on, but fastened with screws, which run in oblong metal slots. At the ends,pieces of hardwood are inlaid, to… … 7830.7834.7838.7860.7864.7868.7872.7876.7880.7884.7888.7892.7896. Nos. 7830-7896. Nos. 7830 to 7896 are well made of narrow boards. The cross-bars are fas-tened with screws, running in brass slots to allow for contraction and expansionof the pine board. Inches. Drawing Board, Hardwood Cross…
Drawing instruments
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