verification hole punch
- Made:
- 1855
- maker:
- Herman Hollerith
This image is released under a CC BY-NC-SA 4.0
Licence
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Science Museum Group
© The Board of Trustees of the Science Museum
Hollerith verification key punch, model 20
Details
- Category:
- Computing & Data Processing
- Object Number:
- 1932-332
- Measurements:
-
overall: 115 mm x 140 mm x 470 mm,
- type:
- punch - marking tool
- credit:
- Fujitsu Siemens Computers Ltd.
