Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc / Kolesch & Company. . makes themeasily accessible to the hand and enables the engineer to readily distinguishwhich screw he is using. Bubbles. Two finely graduated bubbles of 50 seconds sensitiveness,at right angles to each other, attached to the extreme edge of limb plate,which position insures greater accuracy in leveling. Horizontal Limb, 5 inches, divided on Solid Silver to 30 minutes, andnumbered from 0°-360° in tw
Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc / Kolesch & Company. . makes themeasily accessible to the hand and enables the engineer to readily distinguishwhich screw he is using. Bubbles. Two finely graduated bubbles of 50 seconds sensitiveness,at right angles to each other, attached to the extreme edge of limb plate,which position insures greater accuracy in leveling. Horizontal Limb, 5 inches, divided on Solid Silver to 30 minutes, andnumbered from 0°-360° in two rows running in opposite directions, theslant of the figures denoting the direction. Verniers. One vernier, at 30 degrees to telescope, reading to 60 sec-onds (see page 201). Compass, on raised ring, silvered, divided to 60 minutes with 2 inchneedle and jeweled center. With variation plate and capstan head forsetting same. Weight of instrument without tripod, about 7l/2 complete, in finely polished box, with plumb bob, readingglass, adjusting pins and tripod No. 7410 each, $ ® OUR IRON CLAD GUARANTEE, see page 196. 236 kolesch: & co. ^K^ new york, Media Transit. 7690 Media Transit, with Compass and Vertical Circle.(For description see page 237.) KOLESCH <fc CO. NEW YORK, 237 Kolesch Media Transit, No. 7690 7690 Media Transit. U Shape Standards attached to the flange of theinner center. Designed for light and moderately accurate work and espe-cially recommended for mining and preliminary surveying and all similarwork where a light, portable instrument is desired. Telescope, about 8lA inches long. Magnifying power, 19 Cap and Sun Shade. Rack and pinion movement to objective. Im-proved spiral motion slide to eye-piece. Aperture of object glass, 1 inch. Long ground bubble of 60 seconds sensitiveness, graduated on theglass, attached to the extreme end of the telescope. This position of thebubble insures greater accuracy in leveling and mak
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Keywords: ., bookcentury1900, bookdecade1910, bookidillustratedc, bookyear1917
