Review of 5 types of the best laser rangefinders

Laser rangefinder is a technological device for determining the distance by means of a laser beam. Models are divided into pulse and phase. Principle of operation Pulse . The principle of operation is based on

6 best radio controlled helicopters

Radio-controlled toys, along with the improvement of technologies and materials used in the manufacture, are gradually ceasing to be just toys. Technically complex models are bought both for fun and for participation in serious specialized