Descriptive catalogue 1914 : Frost & Adams Co. importers and dealers in artists' materials, architects', engineers' draughtsmen's supplies, mathematical instruments and pyrography requisites. (1914)
Frost & Adams · Frost & Adams · leaf 637
socket is carefully fitted tothe centre of the leveling frame, and is also provided with a clampscrew. The arc is cast on this socket and graduated into degrees. Thelower end of the leveling plate has a half ball which connects the tripodplate to the upper part, as in the case of regular transits… … 650. Architects Level. 12 inch Telescope with MagnifyingPower of 24 diameters and Objective with \% inchAperture, and Rack and Pinion Movement, fittedwith Sun Shade and Dust Cap to Telescope. SpiralMotion to Eyepiece for focusing cross hairs. Groundand Graduated Level Bubbles to a sensitiveness…
Artists' materials · Drawing instruments · Paint
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