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. (1907)
Kolesch & Company · Kolesch & Company · leaf 204
8140 Cross Staff Head, 2] in., octagonal, for Jacob Staff, in case $3.00 8141 Same as 8140, i\ in., in case . j.25 8142 Same as 8140, 3 in., in rase .. . 3.70 For Jacob Staff and Tripods, see page 193. Clinometer Rule. … This exceedingly useful instrument is used for ascertaining the height of any ob-ject at a known distance from the point of observation. After the angle is ascertained,a corresponding mark on the rule will give the rise or fall in any given measured dis-tance. 8145 Pocket Clinometer, boxwood, brass…
Drawing instruments · Surveying instruments
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