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 123
SURVEYING COMPASSES. … 937No. Each. 934. Surveying Compass, with folding sights, 2 levels, vernier on side of compass box, 3% inch needle, ball and socketjoint for mountings on Jacob staff $21 00 935. The same, 4 inch needle/ 23 00 936. 5 25 00 937. Surveying Compass, with sights, graduated for taking angles of elevation…
Drawing instruments
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