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 40
FINEST SWISS INSTRUMENTS. … No. Each. 175. Proportional Dividers, for lines and circles, 9 inch, with rack movement and movable points $16 00
Drawing instruments
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
