Catalogue and price list of Mackey print paoer co. (1897)
Mackey print paper co., Pittsburg, Pa. [from old catalog] · [Pittsburgh?] · leaf 141
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 … 1781 Each. 1781. Amslers Polar Planimeter, German Silver, arranged for measuringareas in either of several units (English and French.) Range:Circle of 24 inches diameter. In Morocco Case, with directions..$25.00 135
Drawing instruments
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