The PM-40 laser rangefinder by the Sibrtech trade mark is designed for measuring linear distances, calculating areas and volumes. It is a lightweight and compact device with a body made of durable ABS plastic. The rangefinder has a measurement range of 0.05 to 40 m with an accuracy of ±2 mm. It includes necessary additional options such as summing and subtracting measurements, calculating area and volume, and calculations using the Pythagorean theorem. The device has an automatic laser shut-off function (after 30 s) and device shut-off function (after 180 s). The rangefinder's body is equipped with a bubble level to ensure even positioning on any surface. It operates on two AAA batteries. Measurement range: 0.05 - 40 m Measurement accuracy: ±2 mm Wavelength: 650 nm Laser class: 2 Power, not exceeding: 1 Power supply: AAA 2x1.5 V