Catalogue. A.H. Abbott & co., manufacturers and importers of mathematical and surveying instruments and drawing materials of every description .. (1896)
Abbott, A. H., & co., Chicago. [from old catalog] · [Chicago] · leaf 199
INK AND COLOR SLABS AND TILES. … 2450 No. 244:0. Ink or Color Slab, 3 holes and slope, 1^*2% inches. 2441. 3 2%xB% 2442. 3 2^x4^ 2443. « 3 3 xi% 2444. 3 u 3%xb 2445. Well Slab, with 3 wells, 3 slopes 2446. « 5 5 2447. Sloping Tile, 3 divisions, 23^x4 inches , 2448.2449.2450.2451.2452.2453. 4 3%x7M 5 3Mx7M 6 3i^x7^ ■« 8 6 *n% 10 6…
Drawing instruments
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