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Circular slide rule, 6 1/2-inch diameter, in case
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Circular slide rule, 6 1/2-inch diameter, in case
Details
- Category:
- Mathematics
- Object Number:
- 1905-113
- type:
- circular slide rule
- credit:
- Major-General H.P. Babbage
Circular slide rule, 6 1/2-inch diameter, in case