[NovEMBER 1, 1890. 286 … description of the new and improved form of the pho-' matic Compasses, Hand Lev- THECOPYING PAD.—HOW TO MAKE nograph just brought out by Edison. With 8 engrav- els, Angle Mirrors, Planime- ings. Contained in SCIENTIFIC AMMRICAN SUPPLE- ters, Pantographs, Engineers? % 4 and how to use; with…
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