![Closeup of one end of the UL slide rule.](https://specialcollections-blog.lib.cam.ac.uk/wp-content/uploads/2016/02/UL-rule-detail-900x300.jpg)
The first slide rule: a discovery in the Macclesfield Collection
Guest post by Boris Jardine. Slide rules dominated the practice of mathematics from their invention in reign of King Charles I to their sudden, electronic-calculator […]
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