Interested in finding out more out about such calculating wonders?
Then try one of the slide rule related articles (often light-hearted) I have published.
Go to the search papers page.
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|Flash||Bank Interest poly-slide (4) calculator||Paper/cardboard/wood||
Hybrid ready reckoner/tabular calculator for calculating bank interest due on deposits, discounting bills or prepayment of calls for amounts between GBP 10 to GBP 1000 - read more ...
|Flash||Pocket Engineer's poly-slide (2) calculator||Paper/cardboard||
Hybrid ready reckoner/tabular calculator for machinery & other engineering related conversions & problems - read more ...
|Flash||Square and Cubic poly-slide (4) calculator||paper/cardboard/wood||
Hybrid ready reckoner/tabular calculator for calculating square areas & cubic volumes - left-hand page of scales for calculating (imperial only) in feet and inches up to 20 sq. feet & 100 cubic feet - right-hand page of scales is for calculating (imperial & metric) in yards, feet or inches up to 100 sq. yards & 100.000 cubic yards - read more ...
|Flash||Universal poly-slide (4) calculator||Paper/cardboard/wood||
Hybrid ready reckoner/tabular calcuator for a wide variety of calculations including imperial based units - read more ...