TELEMECANIQUE SENSORS XUSLAT1 Laser Sheave Alignment ToolRed, 50 ft.. More details: Laser Sheave Alignment Tool, Interior and Exterior, Horizontal and Vertical, Manual Leveling, Number of Beams 1, Number of Dots 0, Number of Lines 1, Beam Color Red, Range w/o Detector 50 ft., Accuracy +/-1/16 In. @ 10 ft., Laser Class 2, Visual/Audible Indicators No, Auto Shutoff No, Plumb Down No, Plumb Up No, Total Number of Vials 0, Number of Plumb Vials 0, Number of Level Vials 0, Number of 45 Degree Vials 0, Number of Scanning Modes 0, Length 6-3/4 In., Width 1-3/4 In., Height 5/8 In.