Three folding engraved plates. 2 p.l., 84 pp., 32 leaves. Small 8vo, cont. boards. Augsburg: E. Kletts, 1769. First edition and very scarce. The idea of engraving scales on glass for use in optical instruments originated with the German physicist Johann Tobias Mayer the Elder (1723-62), but was first realized by the prominent Augsburg instrument maker Georg Friedrich Brander (1713-83). In the present work, the famous physicist Lambert (1728-77), gives an account of Brander's glass micrometers and their application to microscopes and especially telescopes. This is followed by Mayer's description of his invention and two dissertations by Brander on the application of the glass micrometer to a dioptric sector and a level. On pages 77-84, Brander gives a descriptive list of the scientific instruments made and sold by him. Fine copy. ❧ D.S.B., VII, pp. 595-600. Poggendorff, I, 1355-58. Tomash & Williams L18. (Inventory #: 6745)
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