The Martin 1/2" Drive Electronic Torque and Angle Meter, No. PTM-12, is designed to offer a torque reading with an accuracy level of +/- 1 percent. The unit features torque ranges from 120 to 300 in-lbs, 10 to 2550 ft-lbs, and 13.5 to 340 Nm. The angle preset adjusts from 5 to 360 degrees and has an angle memory during ratcheting. The lithium-ion polymer rechargeable battery can last up to 200 hours of continuous operation and offers an auto power off after two minutes. The meter can be used with any wrench, breaker bar, or hand driver and is easy to operate. It is also compliant with both ISO and ASME B107-28 (type 1) standards.