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Unique Log Slide Rule made in Great Britain
According to an internet source, a slide rule is a mechanical analogue computer, which is used primarily for multiplication and division, and for functions such as exponents, roots, logarithms, and trigonometry..
This rule was named after the town at which Unique rules were made, and the company was founded in 1920 by Burns Snodgrass, a mechanical engineering lecturer at Brighton Technical College.
The holder shows some age marks but the ruler itself is in as-new condition. The booklet is included.
