... 20 m remote control 3.Vertical or horizontal scanning laser Ratory laser parameters: LRE203 Leveling AccuracyHorizontal:±15″ Vertical:±20″Leveling ... Range±5oMeasuring RangeDiameter:500m(Using the laser detector)Spinning Speed0,60,120,300,600 r.p.mDirectional-Scanning Angle0o,10 ... o,45 o,90 o,180 oSlope-adjusting Range±5o(Bi-directional)Light SourceGERRN Laser ...