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 201
No. 2494 Per box. •2494. Koh=i=noor Leads, 6H,5H,4H,3H,2H,H, and HB. 6inbox.$0 60 A. W. Fabers. … No. 2500 Per Doz. 2500. Yellow, hexagon, very best Siberian, No. 2B to 6H SI 25 2503. Red, drawing 1 to 5 75 2506. Yellow, polished, round, No. 4B to 4H 60 2o0 i . Hexagon, for mathematical instruments, No. 4 70 2508. Round, U 4 60 195
Drawing instruments
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