... dual-axis compensation axis liquid tilt sensor liquid, the compensation range: ± ≤ 4 'beyond the scope of compensation instruments issued by ... laser diode, optical axis, modulated laser, phase comparison method rangingDistance range(Slant range) without cooperative target(Kodak Gray Card) 0.3 ~ 500m ... 3: 2 to 150m(SRX and RC-PR3 in slant range) distance mode 2 ~ 250m * 8, good weather more than 3: 2 ...