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 99
lockwise) with the pole arm at theright, and the reading on the roller noted. The instrument is then resetwith the pole arm at the left, and the outline again traced in the sameclockwise manner, the reading taken and then the mean average betweenthe two readings will give the correct result. Thus a… … Compensating Planimeter, with short graduated tracer arm withlimited adjustment; generally used with the vernier set for theunit of 0.01 sq. inches. In drawings made to scale the area isobtained by multiplying the reading on the roller with the scaleof the drawing. With improved Needle Pole, Test…
Drawing instruments · Surveying -- Instruments
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