Catalogue and price list of Mackey print paoer co. (1897)
Mackey print paper co., Pittsburg, Pa. [from old catalog] · [Pittsburgh?] · leaf 140
1749 The dividing lines of these Amber Protractors are on the side facing theing. and the amber being perfectly transparent they afford a most accurateing of the degrees. 1749. Amber Protractor, Transparent, Half Circle, % degrees, 4 inches... 1750.1751.1752.1753.1754.1755. Circle, y*y* draw-read-… … 1765 Bach. 1765. Amber Triangle Protractor, whole degrees, 5 inch, Triangle45° $0.60 1766. u u u 6 ii .. 15° 75 1767. ii c< i< 7 u u 45° 1.00 PAPER PRO TFACTORS. 1770. Paper Protractor, Circular, 8 in. diam. 1771. u a 8 in. u 1772. ii t< K!in. u 1773. u u 13 in. ii 1774. u ii 18 in. ii…
Drawing instruments
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