English
roughometer
From rough + -o- + -meter.
Formed from rough + -o- + -meter
Proto-Germanic *rūhaz ‘rough, hairy’
Old English rūh ‘rough’
Middle English rough ‘rough’
English rough
Today it means
noun A device that is attached to a motor vehicle in order to measure the roughness of a road surface.
Language periods are conventional ranges, not dates for this word.
Etymograph / roughometer