Catalogue and price list of Mackey print paoer co. (1897)
Mackey print paper co., Pittsburg, Pa. [from old catalog] · [Pittsburgh?] · leaf 141
1, .. on Bristol-board . i*11 ( .. od traciag papor 30 PLANIMETERS. AMSLERS POLAR PLANIMETERS. The Polar Planimeter is the simplest and most convenient instrument for measur-ing the area of surfaces on drawings and plans. It is of greatest importance to Engineersand others, as plots of ground, area… … 1780 Each. 1780. Amslers Polar Planimeter, German Silver, arranged for measure-ment of areas in square inches, viz.: 10, 1, TV and T^ squareinches. Range: Circle of 18 inches diameter. In Morocco case,with directions $17.50
Drawing instruments
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