This is a pantograph hole punch for punching the first punch cards ever (for the 1890 census). Herman Hollerith invented the punch card as a way to speed up the tabulation of the census. The 1880 census took 7 years to tabulate. Thanks to Hollerith, the 1890 census took just two and a half years (and the population total was complete in 3 months).
- Taken on March 30, 2008
- Mountain View, California, US
- Canon PowerShot G9
- 1,494 Views
This photo also appears in
Additional info (show more)
keyboard shortcuts:
← previous photo
→ next photo
L view in light box
F favorite
< scroll film strip left
> scroll film strip right
? show all shortcuts
-
Photo license:
All Rights Reserved