Computometer

Key Points

• William George Cordingley was the author of several books on commerce and stock exchange.
• This article includes The Computometer of Cordingley's patent drawing.
• The device had 7 digital positions, 5 leftmost are decimal.

The Computometer of William George Cordingley

The Englishman William George Cordingley, the author of several books for commerce and stock exchange from the end of 19th and beginning of 20th centuries, was a holder of 2 British patents — №GB190715435 from 24-10-1907 (see the lower patent drawing) and №GB190901751 from 27-05-1909 for a stylus operated adder of Pascalene type, which was manufactured under the name Computometer.

The device has 7 digital positions, 5 leftmost are decimal, and others are divided according to the English monetary system units from the beginning of the 20th century.

The Computometer of Cordingley patent drawing

The Computometer of Cordingley