range finder
Optical spacing calculator
A range finder is a device that measures the distance to a target.
Hunters and golfers use handheld range finders to determine how far away their quarry or the pin is.
Military range finders help aim artillery.
Photographers use range finders to focus cameras—some cameras have them built in, giving rise to rangefinder cameras as a category distinct from SLRs.
Selecting as objective
- ballisticsProjectile motion science
- artilleryLarge-caliber battlefield weapons
- trajectoryPath of moving object
- azimuthHorizontal directional angle
elevation · coordinates · acquisition · designation · engagement · tracking · sniper · mortar
Optical sighting pattern
- magnificationDegree of visual enlargement
- lensLight-focusing curved glass
- eyepieceLens you look through
- focusConcentrated attention point
monocular · binoculars · diopter · field of view · prism · ocular · glassing · optics
Concentrated light device
- infraredHeat-bearing electromagnetic waves
- ultrasonicAbove audible frequency range
- sonarUnderwater detection by echoes
- radarRadio-wave object detection
echolocation · time-of-flight · pulse · sensor · digital · display · calibration · accuracy
Planned path forward
flagstick · pin · approach · club selection · handicap · caddy · slope · lay-up
Self-adjusting lens clarity
- viewfinderCamera's composition window
- manual focusUser-controlled lens sharpness
- depth of fieldZone of acceptable sharpness
- SLRMirror-based camera abbreviation
targeting
Selecting as objective
- ballisticsProjectile motion science
- artilleryLarge-caliber battlefield weapons
- trajectoryPath of moving object
azimuth · elevation · coordinates · acquisition · designation · engagement · tracking · sniper · mortar · howitzer
reticle
Optical sighting pattern
- magnificationDegree of visual enlargement
- lensLight-focusing curved glass
- eyepieceLens you look through
focus · monocular · binoculars · diopter · field of view · prism · ocular · glassing · optics · crosshairs
laser
Concentrated light device
- infraredHeat-bearing electromagnetic waves
- ultrasonicAbove audible frequency range
- sonarUnderwater detection by echoes
radar · echolocation · time-of-flight · pulse · sensor · digital · display · calibration · accuracy · measurement
course
Planned path forward
yardage · flagstick · pin · approach · club selection · handicap · caddy · slope · lay-up · scorecard
autofocus
Self-adjusting lens clarity
- viewfinderCamera's composition window
- manual focusUser-controlled lens sharpness
- depth of fieldZone of acceptable sharpness
triangulation
Location via three points
- theodolitePrecision angle-measuring instrument
- transitMovement between places
- baselineStandard for comparison
stadia · EDM · reflector · benchmark · elevation · topography · cadastral · mapping · geodetic · leveling
- sonar termsping, echo, contact, bearing, reverberation
- archeryarrow, bow, bows, arrows, archer
- field gearbinoculars, camera trap, canteen, field journal, compass
- HUD elementsHUD, crosshair, crosshairs, reticle, health bar
- artillery equipmentramrod, rammer, firing pin, cartridge case, cleaning rod
- aviation navigationDME, waypoint, radio beacon, localizer, glide slope
range finderguesswork
Conclusions drawn without proof
dead reckoning · rough estimate · rule of thumb · tape measure · eyeballing
range findertape measure
Flexible marked length finder
ruler · yardstick · measuring tape · caliper · feeler gauge
range, finder, find, ranges, ranged, ranging, ranger, rangers, finds