Đồng hồ đo độ cứng cao su, nhựa PTC model 414USG
PTC®’s Model 414USG Durometer measures hardness of drywall sheets during processing. Drywall can be checked for proper curing before the cutting stage.
The instrument features a low glare aluminum serialized dial with bold, easy to read numbers. The durometer has a Max Hold hand, which retains the peak reading. A test block and carrying case are included with the instrument.