A Laser Distance Meter or Measurer is an electronic optical instrument used for measuring distances without maintaining any physical contact with the target object. A Laser Distance Meter is used to find the horizontal and vertical distance of any object. A Laser Distance Meter is often called an LDM or a Laser Range Finder. It is a compact instrument used in the place of tapes and scales that are huge. A Laser Distance Meter works using LASER. A laser beam of light is emitted from the instrument through a light emitting diode or an LED.

This beam of light travels to the target object and gets reflected to the Laser Distance Meter or the Laser Range Finder. The time taken for this light to travel to the target object and return to the instrument is noted and then used for further calculations. There is a reason why Laser is used in these instruments. LASER beam is a very intense beam of light that travels relatively faster. It also travels quite a distance before it distorts and diverges. But the material of the target object can contribute to the distortion of the Laser beam as some materials tend to distort laser light more than others. As the Laser beam is very intense and powerful, it can even work in bright outdoors efficiently.