Richards's indicator

noun Rich·ards's indicator \ˈrichə(r)dz(ə̇z)-\

Definition of Richards's indicator

  1. :  a steam-engine indicator using a straight-line reducing motion between the working piston and the recording stylus or pencil which makes it suitable for use on high-speed engines

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Origin and Etymology of richards's indicator

after Charles B. Richards †1919 American engineer, its inventor

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