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. (1917)
Kolesch & Company · Kolesch & Company · leaf 87
d and has the degrees indicated by notchesinstead of lines (see cut). To lay off a degree put the pencil in the notchcorresponding to the degree wanted. For z/2 degrees set pencil at the pro-jecting points between the notches. When a number of angles are to belaid off from a common apex, the… … Semi-circular Protractors, made of German Silver, with Vernier, Horn Centerand Movable Arm. 2214 5§ in., divided to | deg., Vernier reading to 3 minutes, length of arm beyond outer edge, 5I in each, $10.00 2215 Same, in Morocco Case • *3-5° 2218 8 in., divided to J deg., Vernier reading to 1…
Drawing instruments · Surveying -- Instruments
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