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 98
FLAT BOXWOOD SCALES Machine Divided. U. 5. Standard. … iwiwiwri i i A minim i No. Each. 593. Flat Boxwood Scale, 6 in., div. %, %, %t 1 in. to the foot.. $0 50 594.595.596. 12 t( X, K. X, i 12 u %,%,IX,3 m/2 <( X.K.X.1 75 75 85 No. 596 has the advantage of covering 100 feet on Va inch, 50 feet on Hinch, and 25 feet on y2 inch scale. 597. Flat…
Drawing instruments
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