Tohnichi RTD30CN Adjustable Torque Screwdriver 4-30 cNm - Precision Tool for Electronics, Watch Repair & Small Mechanical Assembly

I needed a torque screwdriver to apply the correct torque on audio cartridge mounting hardware. These types of screws need a torque between 0.06Nm to 0.4Nm. The Tochinchi RTD30CN supports a range of 0.04Nm - 0.3Nm which is perfect for my needs. The torque driver is very well built and is accurate to 3% of the set value. It comes with a certificate of calibration. The torque values are easy to set. The driver's coupler supports ¼" power bits and is about 4" long without a bit installed. The handle is non-magnetic. The coupler is slightly magnetic but is not magnetized. Non-magnetic stainless steel bits are your best bet for use when torquing cartridge mounting hardware. Since audio cartridges have magnets, you should to be a little careful. This driver is a great value, is well built, and is simple to set and use.