PBC Linear MR20R 0460 Linear Guide Rail, Size 20, 460 mm Length, 20 mm Width, Aluminum 41HX21 1 Degrees C Body Style 1 Degrees C Body Style Compact Mounting Style Handheld Only Number of Batteries Required 1 Maximum Operating Temperature Degrees F 122 Degrees F Batteries Included Yes Calibration Certificate Type Not Certified Minimum Temperature Measured Degrees F 22 Degrees F Distance To Spot Ratio 8:1 Emissivity Adjustability Adjustable Battery Run Time 12 hr Secondary Measuring Method No Secondary Measuring Method Includes Work Light Work Light Included Laser Sighting Type Single Dot Testing Functions Average Beam Height 4 3 8 in Range (F) 0 248 Channel Material Steel Screw Type Low Profile Socket Head Cap Number of Rail Holes 8 Mounting Hole from Shaft End 20 mm Mounting Hole Center to Center 60 mm Mounting Hole Center to Shaft End 30 mm Mounting Hole Size 6 mm Overall Length 460 mm Overall Width 20 mm Overall Height 13 Linear Guide Rail