laser rangefinder
Light-based distance tool
A laser rangefinder is a device that measures distance by timing how long a laser beam takes to bounce back from a target.
Used in surveying, golf, hunting, and military applications: The golfer checked her laser rangefinder before selecting a club.
Most handheld models display distance in yards or meters with high precision.
- light reflectionRedirected luminance from surfaces
- opticsScience of illumination
- triangulationLocation via three points
- time-of-flightDuration of particle travel
- autonomous vehiclesMotor transport needing no human
distance measurement · surveying · interferometry · photodetector · hunting scope · sniper rifle · speed of light · Doppler effect · battery pack · phase shift · beam splitter · clinometer · industrial automation · theodolite · land survey · photogrammetry · spotting · crosshairs
- measuring toolstape measure, ruler, yardstick, tablespoon, teaspoon
- Laserscoherence, cavity resonator, LASIK, maser
- Military Sensorssensor, early warning radar, infrared sensor, thermal imager, night vision
- optical instrumentsmicroscope, telescope, binoculars, spectroscope, spectrometer
- rangefinders
- sensorsbiosensors, temperature sensor, pressure sensors, heat sensor, ammeter
measurement technology
laser rangefindereyeballing
Estimating by sight alone
tape measure · measuring tape · guesswork · rule of thumb · ruler