Feature: 1. This digital torque meter is simple to operate and portable to carry. 2. Large digital display with backlight, supports display of torque value, unit, working mode, data storage number, easy to understand. 3. Two-ways measurement, support adjustable in clockwise and reverse direction, can be used in forward and reverse directions, error: 2% clockwise, 2.5% counterclockwise, more convenient to use with ratchet hand. (Wrench to be purchased separately.) 4. Two working modes, freely switchable between \"trace\" tracking mode and \"peaks\" peaking mode. 5. Four units are available, you can adjust between Kgf.cm, N.m, Ibf.ft and Ibf.in depending on your needs. 6. Pre-set values with sound and light alarm, preset values according to the torque to be measured, when the buzzer is switched on and the preset target torque value is reached, the buzzer will sound long and the red light will be on. 7. When used in conjunction with a common ratchet, it becomes a digital torque indicator with the same function as a digital torque plate. (Handle to be purchased separately.) 8. Widely used in the automotive, bicycle and machinery repairing industries. Specification: Name: Digital Meter Material: plastics Models: TQA2-030, TQA2-340, TQA2-135, TQA2-200 (optional) Batteries: 2 * No.7 batteries (not included) Accuracy: 2% clockwise, 2.5% counterclockwise Data storage: 999, 999, 999, 999 Indexing values: 0.01, 0.1, 0.1, 0.1 Display ranges: 0.3-30, 1.35-135, 2-200, 3.4-340 Alarm ranges: 0.9-30, 4-135, 6-200, 3.4-340 Accuracy guarantee ranges: 20-100%, 20-100%, 20-100%, 20-100% Connection heads size: 1/4inch, 3/8inch, 1/2inch, 1/2inch Operating mode: P(Peaks)/T(Trace) units: kgf.cm/N.m/Ibf.ft/Ibf.in Push button: 6 Operating temperature: -20°C to 70°C Operating humidity: 15-90% Automatic shutdown: 60s Carried adapter: TQA2-030: 1/2inch square hole to 1/4inch squarehead TQA2-135: 1/2inch square hole to 3/8inch squarehead TQA2-340: 1/2inch square hole to 1/4inch squarehead, 1/2inch square hole to 3/8inch squarehead TQA2-200: 1/2inch square hole to 1/4inch squarehead, 1/2inch square hole to 3/8inch squarehead Product size: 76 * 47 * 47mm / 2.99 * 1.85 * 1.85in Product weight: TQA2-030: 200g / 7.05ounce TQA2-135: 300g / 10.58ounce TQA2-340: 400g / 14.11ounce TQA2-200: 400g / 14.11ounce Package size: 130 * 108 * 60mm / 5.12 * 4.25 * 2.36in Package weight: TQA2-030: 300g / 10.58ounce TQA2-135: 350g / 12.35ounce TQA2-340: 450g / 15.87ounce TQA2-200: 450g / 15.87ounce . Package List: 1 * Digital Meter 1 * Screwdriver 2 * Joint Adapter