The Straightpoint COLT clamp on line tensionmeter is a fast and accurate tool for measuring guy wire and wire rope tension up to 11,000 pounds with up to 1-inch diameters. This digital tensionmeter is lightweight, easy to handle, and works on wires that are already under tension at any angle. The COLT clamp on tension meter has a number of uses for wire rope installations, guy wire cell tower/bridge maintenance, elevator hoists, zip lines, metro rail wires, ski lifts, ship masts, and more. The COLT clamp on line tension meter (Straightpoint part #COLT5T & Crosby part #2789000) transmits load date wirelessly via Bluetooth (up to 328-foot range) to any smart device running the free Straightpoint COLT2 App for Android or iOS. The app features an unlimited wire rope calibration database to easily store and access all your readings. There is a built-in magnetic smart device holder that allows you to mount your device to the tension meter for traditional on-board display. The COLT tensionmeter is lightweight yet durable, made from aerospace grade aluminum. This tensionmeter has a water-resistant design for all-weather use. The Straightpoint COLT operates on two 'C' cell batteries that provide massive 1,000-hour battery life.