Object Details
- Hollerith, Herman
- Description
- This wooden board has six switches on it, and six metal nubs. The nubs and one end of each switch are screwed into the board. On the opposite side are contacts for electrical wires. Twelve nails in the board on top assure that one switch can only meet one nub. Holes at opposite ends of the board allow it to be attached to a table, with a groove in the back for wires.
- Compare to switches on the Hollerith tabulating system with museum number MA.317982.05.
- Location
- Currently not on view
- Credit Line
- Gift of the Estate of Herman Hollerith, Jr.
- ca 1900
- ID Number
- MA.335637
- accession number
- 1977.0114
- catalog number
- 335637
- Object Name
- contact board
- Physical Description
- rubber (overall material)
- wood (overall material)
- brass (overall material)
- Measurements
- overall: 3.8 cm x 8.3 cm x 6 cm; 1 1/2 in x 3 9/32 in x 2 3/8 in
- See more items in
- Medicine and Science: Mathematics
- Computers & Business Machines
- Tabulating Equipment
- National Museum of American History
- web subject
- Mathematics
- Record ID
- nmah_694430
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a5-3ffa-704b-e053-15f76fa0b4fa
