<B>Tohnichi Adjustable Torque Screwdriver RTD20Z (6~20 in.ozf) Review</b><P>http://tinyurl.com/pwwunnh <P><P> Tohnichi Adjustable Torque Screwdriver RTD20Z (6~20 in.ozf) <P>Adjustable torque setting by twisting shaft with main and supplementary scales. For Clockwise tightening only<P>Lock ring holds selected torque value in place and a click alerts user that torque set has been achieved<P>Rotary slip mechanism prevents over torque by ratcheting after click. Accuracy +/-3% of indicated value<P>Accepts 1/4 hex bits (not included)<P>Includes Certificate of Calibration (NIST Traceable Cert offered for additional fee)<P>
