There are several devices to measure a length, distance, or range.
Contact devices
Standard Units of Measurements - Science - STANDARD UNITS OF MEASUREMENTS Scientists all over the world have accepted a standard unit of measurement known as International System of Units or SI Units. One meter has 100 divisions known...
Non-contact devices
- Ranging
Based on time-of-flight
- Electronic distance meter
- Ultrasonic ranging module (sonar, echo sounding)
- Radar distance measurement
- Laser rangefinder, lidar
Other
See also
- Distance measuring equipment (aviation)
- Metric scale
- Altimeter, height
