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 109
SLIDE RULES. … No. Each. 800. Thachers Calculating Instrument, for performing the greatest variety of useful calculations, with greatest rapid-ity and accuracy. Cylinder, 18 inch, in polished mahog-any box $35 00 801. Thachers Calculating Instrument, with reading glass, sliding on a brass bar and adjustable to…
Drawing instruments
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
