FIELD: railway track metering. SUBSTANCE: predometer has frame 2 resting on running mechanisms 5. Plane 3 of the frame is parallel to base plane formed by resting points 4 of the wheels. Laser receiver 17, is installed on metering trolley 16 linked to frame 2 and suitable for vertical and crosswise motion about trolley 16. Additional cartridge 22 is fixed on frame 2. Laser radiator 27 is installed on the cartridge, and is suitable for vertical and crosswise motion about the cartridge. Predometer height is restricted with specified slope plane generating a slope of 5 to 10 about base plane 13 in the front part of the predometer. Specified line crossing specified slope plane 13 and frame plane is parallel to the base plane and perpendicular to cross direction of the predometer. EFFECT: highly accurate metering. 11 cl, 3 dwg
