XS Scuba Brass/Glass 2.0" PSI Pressure Gauge - Professional Dive Equipment for Underwater Exploration & Scuba Diving Adventures

I bought this to replace my Halcyon gauge, which seemed to be losing accuracy at an accelerated rate with every dive I took. Initially my old Halcyon would show my air supply as being 150 lbs more than actual (as verified by my wireless Suunto sending unit, which is my primary) until readings crept up to more than 400 lbs over... time to get a new one. Coincidentally, this Highland is starting out at 150 lbs over so we'll see how long this lasts. For now, I have better accuracy.