The Computometer of Computometer

The Englishman William George Cordingley was a holder of 2 British patents—No GB190715435 24.10.1907 (see the lowe patent drawing) and GB190901751 27.05.1909 for a stylus operated adder of Pascalene type, which was manufactured under the name Computometer.

Computometer patent drawing

The Computometer of Cordingley patent drawing

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

Computometer

The Computometer of Cordingley