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 107
ckel plated bars, 6 inch it « << <« (> << << Q << II «< <( II II ll l« lO << M i< it i< << 15 << «< << << << «< «< io << «« i« (< it ii <i it 04. ROLLING PARALLEL RULES.… … Ebony Rolling Parallel Rule, brass mountings, 9 inch —it 11 11 11 11 11 10 <i 11 it it 11 11 15 11 11 11 11 11 11 ]Q 11 ,« 11 .1 «i 11 .1 divided ivorv ed^es, 12 inch Ebony Rolling Parallel Rule, brass mountings, divided ivory edges, 15 inch Ebony Rolling Parallel Rule, brass mountings, divided…
Drawing instruments
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