Artifact Details

Title

Plus calculator

Catalog Number

XB81.80

Type

Physical object

Description

Electric calculator that uses nine complement arithmetic.

Date

ca. 1949

Manufacturer

Bell Punch Company, Ltd.

Place Manufactured

UK

Identifying Numbers

Model number 909/C/V/504.929/A
Other number 504 929 engraved in machinery beneath casing

Dimensions

6 1/2 x 10 3/4 x 13 1/2 in

Category

Calculator/electromechanical

Collection Title

Gwen Bell artifact and book collection

Series Title

Pre-computing artifacts

Credit

Gift of Gwen and C. Gordon Bell

Lot Number

X6288.2012