| Sub-Type | Slide Rules |
|---|---|
| Type | Engineering/ Surveying |
| Period | 1901 to 1950 |
| Material | wood/plastic |
| Country of Origin | United Kingdom |
Check the listing for details. Dynamo Slide Rule Mechanical Analogue Calculator Mathematical 1940s A G Tornton. Condition: Used, Made in United Kingdom. Listed at 40.89 USD. All proceeds go to charity. Useful Information.
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