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 127
, 3 inch, in case, for Jacob staff, with magnetic compass 3 inch, needle \% inch, withcenter axis and divided circle, to take any angle, 3% in. .$12 00 957. Surveyors Angle Mirror for Right Angles. Instrument furnished with small plumb bob, size, when packed, 3%x2x1% inch 8 50 958. Rectangular… … 968. Pocket Sextant, divided on silver, to 30 minutes, vernier read-ing to 1 minute, with telescope, 2 neutral glasses, readinglens, metal box, diameter 3x1)^ inches high, and tangentscrew, in leather sling case 42 50
Drawing instruments
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