how do lasers measure distance
Laser Entfernungsmesser image by Otmar Smit from Fotolia.com. A laser distance meter works by use measuring the time it takes a pulse of laser light to be reflected off a target and returned to the sender.perating Principle. A laser distance meter emits a pulse of laser at a target. The pulse then reflects off the target and back to the sending device (in this case, a laser distance meter).