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slide rules

n. (slide rule English)

Usage examples of "slide rules".

To the outsider, the place is just a set of gray buildings with gray people working slide rules and writing out long equations on blackboards.

Malenfant, a gadget fan, pored over wooden locks, clocks and slide rules, all made entirely of wood.

And he got together with a group of other engineers, all serious men with slide rules, and they borrowed money and mortgaged their houses and built a local system and poured the money back in and started building the Trunk.

She would spend her days with the other students: boys with the final generation of slide rules hanging like trophies from their belts.