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Cashmores Proportion Calculator
The following pages link to here:- Cashmores Proportion Calculator
- Analogrechner
- Wagner Planimeter
- Proportionalrechner
- Patent:GB417841
- Patent:US1965062
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- Patent:US3122314
- Patent:US5084609
- Patent:GB214919
- Patent:US3139234
- Patent:US1486400
- Patent:US2469672
- Patent:US324078
- Patent:US1553683
- Patent:US2300401
- Patent:US3563456
- Patent:US1969296
- Patent:GB112416
- Patent:US3345752
- Nichtlogarithmische Analogrechner