map-measurer
noun
An instrument for measuring distances on a map, usually with a small rotating wheel at the tip.
Origin
Late 19th century; earliest use found in Edward H. Knight (1824–1883), patent lawyer and expert in mechanics.
- rotate
- rotation
- rotational
- rotational latency
- rotationally
- rotational quantum number
- rotational symmetry
- rotation crop
- rotation curve
- rotation grass
- rotation group
- rotation office
- rotative
- rotativism
- rotativist
- rotator
- rotator cuff
- Rotatoria
- rotatorial
- rotatorian
- rotatory
- rotatory power
- rotavate
- rotavation
- rotavator