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Patent:GB191502668


Patent:GB 191502668
Title:Proportional Calculator
Date:21.02.1916
Place:
Country:Great Britain
Person:Mather, John Cecil (P)
Company:
Internal Links:Analogrechner, Nomogramm
Keywords:
Link to the patent office:
(without guarantee)
 GB191502668


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Aus der Patentschrift GB191502668

"Proportional calculators comprise a sheet of paper, cloth, or metal having a number of radial lines enclosed in a square, as shown in Fig. 1, on which is superposed a transparent sheet, upon which is drawn a square of the same size divided by a number of horizontal and vertical lines, as shown in Fig. 2; the top and bottom lines of this square are graduated from 0-1000 or to any other convenient scale. ..."