The Norbar TruCheck 2 is a cost effective torque wrench checker that has been redesigned to incorporate improved features, whilst maintaining ease of use. Enables torque wrench performance to be monitored and tools to be kept in peak condition. With limited settable options, ideal for non-expert users with click type torque wrenches. It features a large screen for clarity and the Micro USB 2.0 port enables power from any USB power source. Supplied with traceable calibration certificate in clockwise direction. Specification Drive Size 1/2in Female Range 10-350Nm Display LCD Display Temp Range Operating 0C to +50C, Storage 20C to +70C Auto Reset Hold Time 3 seconds Power Consumption 0.5W Requires 2 x Hexagon Socket Head Cap Screws ISO 4762 - M10 - 12.9 to fix in position (not included).