This review covers Mac Tools’ 1/4-inch drive digital torque wrench, model TWM265IDA. Three additional digital torque wrenches are also available, including TWX100FDA (3/8-inch drive with a range of 5 to 100 ft.-lbs.), TWV145FDA (1/2-inch drive with a range of 10 to 145 ft.-lbs.), and TWV250FDA (1/2-inch drive with a range of 15 to 250 ft.-lbs.). All models offer torque value selections in in.-lbs., ft.-lbs., Nm and kg.cm.
This digital torque wrench not only allows you to select torque unit format (in.-lbs., ft.-lbs., Nm or kg.cm) and to easily set your desired torque value, but it offers a very noticeable light flash and beep as you approach and reach your selected torque. The wrench also allows you to record the torque values that you’ve reached for later review. Let’s say that you just tightened a bolt to your desired torque, then answered the phone or took a break. If you start to worry about what you tightened the last bolt to (if you suffer from short-term memory loss), you can review your last operation.
If you want to record your torque on the tool’s internal memory, press the U/S button and hold it down. The display will then display “mode,” letting you know that you’re in the peak/track mode.
After turning the unit on by pressing the “C” button, choose your desired unit format (in.-lbs., ft.-lbs., Nm or kg.cm) by pressing the “U/S” button (press the button once for each change until you hit the format you want). Then set your desired torque value by pressing the up or down button until the value you want is displayed.
I selected this particular model (featuring 1/4-inch drive) specifically to try it out on lower torque value applications with smaller diameter fasteners (No. 6, 8, 10 and 12 machine screws, 1/4x20, 1/4x28, 4 mm, 5 mm, 6 mm, etc.) such as carburetor service, certain sensor applications, throttle body service, etc., where in.-lb. values are commonly required.
As you approach your desired torque, the green LED lights will start to illuminate, in progression, for 80%, 85%, 90%, 95% and 97.5% of your max setting. The red LED will illuminate when you’re within 99.5% of your setting. This allows you to creep up on your target while being alerted as you get close and when you hit your target. This is a very nice feature, helping you to avoid over-torquing on delicate fastener applications.
During our test use, we found these lights to be bright and very noticeable, even out of the corner of your eye. They really stand out and grab your attention. They clearly indicate when you are approaching and when you hit your target value.
There’s no need to remember to turn off the tool. It automatically shuts down and enters a sleep mode after five minutes of non-use.