ruler
An instrument used in mathematics and engineering to measure distances or to draw perfectly straight lines.
A ruler is usually relatively short. See measuring stick for long rulers.
See also
- Caliper
- Compass (instrument)
- Measuring stick
- Protractor
- Set square
- Steel square
- Straightedge
- T-square
- Tape measure
- Holding ruler
The following tags implicate this tag: holding_ruler (learn more).
