Glass encased sectional model of Comptometer by Felt & Tarrant
- manufacturer:
- Felt and Tarrant Manufacturing Company
This image is released under a CC BY-NC-SA 4.0
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© The Board of Trustees of the Science Museum
Glass encased sectional model of Comptometer by Felt & Tarrant, Chicago, USA, controlled key duplex model J
Details
- Category:
- Mathematics
- Object Number:
- 1928-309
- type:
- model (calculating machine) and comptometer
- credit:
- Felt and Tarrant Manufacturing Company
