Pro-Ject Audio Measure It E Stylus Tracking gaugeThe Measure It E Stylus Tracking Force Gauge is a highly accurate electronic scale that is designed for measuring stylus tracking forces up to 5. 0 grams in 0. 002 gram increments. The Measure It E is easily calibrated, simply hold down the "Tare" button to zero the scale. Double check the accuracy of the pressure gauge measurements with the supplied 5g weight. When in doubt about the actual amount of pressure on the diamond tip of our stylus, check