This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 edition. Excerpt: ...else-where: a Astronomical and geographical instru-ments--Telescopes, transits, and equatorials, including the tubes and frames.... Globes charting the earth or the skies, instruments for surveying, leveling, and plotting--Squares, compasses, water levels, air levels, plane tables, alidades, chains, leveling rods, etc Instruments of precision for measuring and drawing--Barometers, precision balances, trebu-chets (including cases), cases of weights for precision balances Cases of mathematical Instruments, compasses, squares, curves, panto-graphs, slide rules, planlmeters, di-viding apparatus, gauges, microme-ters, and other measuring, testing, and calibrating instruments f Alcoholometers, areometers, densimeters, thermometers, manometers c The same, of wrought or cast Iron or steel. Instruments and apparatus for demonstra-tion and instruction for phvsicul and chemical lecture rooms, laboratories, and research work Observation, geodetic, and optical instru-ments: Alignment circles, theodolites, tele-scope levels, taehymeters, marine compasses, quad rants, sextants, and other instruments containing tele-scopes or graduateil arcs, lenses, op-tical glasses, prisms, finders, etc., polished and ground d Microscopes Object glasses and lenses for astronom-ical, optical, and photographic in-struments, imported separately or fitted to the instruments Stereoscopes, thread counters, marine and spy glasses, etc Photographic apparatus: Hand cameras, snap-shot cameras, double cameras, and all kinds of hand apparatus, steroscopic or not (such as verascopes. glyphoscopes, etc.); metal shutters Cinematographs, proje ting appara-tus, magic lanterns with cinemato-graphic mechanisms, and other ap-paratus i Apparatus and instruments with fittings or mountings of..