Review on HHIP 4901 0084 Master Precision Level by Chris Durandis

Very satisfied with this product. I have previously ordered a similar product from another seller on Revain. The previous product did not calibrate at all. They relied on the pressure of a spring acting on an adjustment screw to maintain calibration. However, the HHIP has a much more secure adjustment system, where the base on which the dome rests is adjusted with a machine screw with a lock nut on either side. This style can be refined in minutes and has not previously required any additional "tuning".