Catalogue and price list of Mackey print paoer co. (1897)
Mackey print paper co., Pittsburg, Pa. [from old catalog] · [Pittsburgh?] · leaf 142
PLANIMETERS. (continued.) … 1782 Each. 1782. Amslers Polar Planimeter, German Silver, arranged for everykind of measurement, with special arrangement for findingrapidly the mean height of indicator diagrams. In MoroccoCase, with directions $30.00 PANTOGRAPHS.
Drawing instruments
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