Accuracy.....20’ (+2mm per 20 m)
Full-scale range of the  compensator,
not less than.....±15' 
Rated scale division of a round level ampoule..... 10'

Diameter of laser spot, not more than:
at the output.....5mm
at the distance of 30m.....20mm
Laser wave length.....650-670Gm
Maximum permissible distance at work, not less than:
with a receptacle.....150 m
without a receptacle.....30 m
Speed of rotation,....from 0 to 600 rev/min

Average capacity, consumed by level, not more than.....0,75 Vt
Supply, built-in vacuum battery.....4,8 V Operation period.....about 20 h
Temperature range.....from -20 to +50°C
Mass of a level, not more than.....1,5 kg

The level can be referred to II class danger.