Technical data Laser transmitter   Sheave diameters Ø 2.5" (60 mm) and upwards Sheave width Not dependent on sheave width Beam angle 60° Measurement range 33 feet (10 m) Type of battery 1 x R6 (AA) 1.5 V Operating time battery 8 hours continuously Laser class 2 Laser output power <1 mW Laser wavelength 635–670 nm Material ABS plastic/Hard anodised aluminum Dimensions WxHxD: 5.8"x3.4x1.1" (145x86x30 mm) Weight 8.6 oz (270 g)     Targets 2 pcs with magnetic mounting Finesse   Thanks to the low weight, the tool can be mounted on non-magnetic pulleys with strong double-sided tape. Calibration     The laser line that the tool generates is calibrated parallel to the reference surface. Accuracy: Offset < 0.008" (0.2 mm), Parallelism < 0.05°   Shaft alignment Sheave/pulley alignment D90 D130 D150 D160 Geometric measurement Shims Custom systems