Comptometer
Pressing keys in columns added numbers instantly with no cranking, and it made office bookkeeping much faster.
- Date
- ca. 1887
- Maker
- Felt and Tarrant Mfg. Co.
- Place
- USA
- Materials
- Metal, plastic
- Dimensions
- Overall: 14.4 x 36.2 x 23.3 cm (5 11/16 x 14 1/4 x 9 3/16 in.)
- Museum
- Cooper Hewitt, Smithsonian Design Museum
- Credit line
- Gift of New York Life Insurance Company
The museum's own record (Smithsonian, Cooper Hewitt, Smithsonian Design Museum)
Also answering “How much?” see all
Patent Model for Simplex Slide Rule Clasp Invented by Rudolph C. Smith
Log and Rotor, Patent Model
Keuffel & Esser 1741 Thacher Cylindrical Slide Rule
Odhner Arithmometer
Barbour Calculating Machine
Baldwin Calculating Engine
Baldwin Arithmometer
Patent Model for Estimator Slide Rule Invented by Fredric Maurice Stapff
Peerless hanging letter scale
Odometer by J. D. Roberts
Barbour Calculating Machine Model
Rotating Mathematical Table, Sinclair's Freight Computer