profilograph

noun

pro·​fil·​ograph

prōˈfiləˌgraf,

-fīl-,

-rȧf

1

: an instrument borne on wheels for recording automatically the profile of the land over which it travels

2

: an instrument for measuring smoothness of a surface (as of a metal casting) by amplification of the minute variations from the plane or arc of smoothness

Word History

Etymology

International Scientific Vocabulary profile entry 1 + -o- + -graph; originally formed as French profilographe

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