quarter turn
Right angle rotation
A quarter turn is a rotation of ninety degrees—one-fourth of a full circle.
The term appears in instructions for mechanical operations: Give the knob a quarter turn clockwise.
In plumbing, quarter-turn valves open fully with a ninety-degree rotation rather than multiple turns.
The phrase also describes dance moves and gymnastics positions.
- ninetyTen less than hundred
- degreesUnits of measurement
- rotateTurn about an axis
- twistRotating motion or surprise
- twist offOpen by rotating
valve · ball valve · gas valve · knob · door knob · crank · pivot · clockwise · counterclockwise · handle · faucet · pipe fitting · quick release · wrench · socket · fastener · bolt · screw cap