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 209
strument, two or three parallel lines can be made with onemovement; it is used exactly in the same manner as the commonsingle and double round writing pens. The accompanying 9 minutepens allow to produce 1J4 different double and 504 different triplelines, by simply changing the pens in the… … 2660 2660. Parcel Pens, in 4 different widths,-6 and 7 inches long, forbold and large lettering: No. 131, 133, 135, 137, -l-f inch wide each, 70 25
Drawing instruments
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