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. . e jaws, and the thickness of the materialinserted between the jaws is indicated on the dial. Reads to one-half thousandths. 96 EOLESCH <fc CO. NEW YORK. Compensating Planimeters Compensating Planimeters as listed on this page are the latest im-proved type of the Polar Planimeter. As per illustration, the connectionbetween the tracer arm and the pole arm is a hall and socket joint, whichallows th
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. . e jaws, and the thickness of the materialinserted between the jaws is indicated on the dial. Reads to one-half thousandths. 96 EOLESCH <fc CO. NEW YORK. Compensating Planimeters Compensating Planimeters as listed on this page are the latest im-proved type of the Polar Planimeter. As per illustration, the connectionbetween the tracer arm and the pole arm is a hall and socket joint, whichallows the use of the instrument in two opposite symmetrical area to be computed is traced (clockwise) 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 compensation oferrors, both in the tracing of the outline and the reading of the vernieris obtained. An exhaustive treatise on the use and application of theplanimeter, furnished with instrument. 2930. Compensating Planimeter, with short graduated tracer arm withlimited adjustment; generally used with the vernier set for theunit of 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 Rule, Table ofSettings and directions, in morocco case each, $24,00
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Keywords: ., bookcentury1900, bookdecade1910, bookidillustratedc, bookyear1917
