Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 357
HAND LEVELS Improved Pocket Reflecting Prism Levels … 4000 4000. Pocket Reflecting Level in bronze metal case, 5 inches long, with rectangular prism reflector. At the farther end of the tube is asliding eyepiece in which is fixed the half of a circle of magnify-ing lens, and by the slide the reflected air bubble can be perfectlyfocused. Protecting…
Engineering instruments · Drawing instruments
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