The bolts that hold the discs at the end of the rod have no stop on the threads that would allow the disc to rotate once the bolt is tightened. So if you roll it over the shaft it loosens the screw. I used it twice before losing one of the drives.
π§ UEi Test Instruments DAFM3B Digital Multimeter
6 Review
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review