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 206
SPONGE RUBBER, For Cleaning Drawings. … 21517 No. Each. 2614. Sponge Rubber, small, lxlxl inch §0 10 2615. medium, rubber back (glove cleaner), 58x 1^x21/2 inch 25 2616. medium, 1x2x3 inch, hard back 50 2617. * large, 1x2x4 inch 50 2618. mammoth size, 1x4x6 inch 1 50 Sponge rubbers are most suitable for cleaning drawings without erasing…
Drawing instruments
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