Patent:GB191502668

Patent:	GB 191502668
Titel:	Proportional Calculator
Datum:	21.02.1916
Ort:
Land:	Großbritannien
Person:	Mather, John Cecil (P)
Firma:
Links im Rechnerlexikon:	Analogrechner, Nomogramm
Schlagworte:
Link zum Patentamt: (ohne Garantie)	GB191502668

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. ..."

DATUM: 21.02.1916
TITEL: Proportional Calculator.
PERSON: MATHER JOHN CECIL

Rechnerlexikon

Patent:GB191502668