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. . ross hairs. Fine bubble (4*4 in. vial) of 60 seconds sensitive-ness, graduated on the glass, attached to the telescope. Improved devicefor locking the clips in the Ys. The telescope is fitted with an adjustablecollar into which the two trunnions, furnished with the instrument, can beinserted by means of a screw thread. In this position, the level can beused as a transit as per above illustration. H
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. . ross hairs. Fine bubble (4*4 in. vial) of 60 seconds sensitive-ness, graduated on the glass, attached to the telescope. Improved devicefor locking the clips in the Ys. The telescope is fitted with an adjustablecollar into which the two trunnions, furnished with the instrument, can beinserted by means of a screw thread. In this position, the level can beused as a transit as per above illustration. Horizontal Circle, 3 inches,divided to degrees, reading by a vernier, attached to the spindle, to 5minutes. This circle is held in place by a friction clutch and can be setat zero at any given point. Clamp and tangent screw with counter springto level bar. Four Leveling Arms. Weight of level without tripod about5 lbs. Instrument complete, in finely polished box, with plumb bob,adjusting pins, metal trivet (shown on page 252), book of instructionsand tripod No. each, $ ST OUR IRON CLAD GUARANTEE, see page 196. 250 KXXLESCH <fc CO. /ClC^ NEW YORK. Kolesch Builders Level No. 7860. 7860 Builders Level, designed especially for the use of Builders, Ar-chitects and Contractors for leveling and plumbing walls, giving linesand levels for buildings, laying out angles, grading streets, sewersdrains, etc. Telescope about 12 inches long, magnifying power 19 diameters. Lensesof the very best domestic make. Objective 1% inch. Dust Cap and SunShade. Rack and pinion movement to objective. Adjustable eye-piece forfocussing cross hairs. Fine bubble (4T4 inch vial) of 60 seconds sensitive-ness, graduated on the glass, attached to the telescope. Improved devicefor locking the clips in the Ys. Horizontal circle, 3 inches, divided to de-grees reading by a vernier, attached to the spindle, to 5 minutes. Thiscircle is held in place by a friction clutch and can be set at zero at anygiven
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Keywords: ., bookcentury1900, bookdecade1910, bookidillustratedc, bookyear1917
