After receiving the guage, it was very impressive with the shinny stainless steel surrounding a large 3 inch dial. I couldn't wait to install it on my twin smoker and "give it the test". I built a fire in the fire box after easily installing it into my 1/2 inch (npt) opening and watched the analog needle do it's thing. I did question the reading and felt that the guage was a little off from what I thought the temperature inside the chamber should be. I went and got my digital guage with probes and put the probes inside the cooking area near the 4 inch probe protruding from the new guage. To my surprise both the digital, and the new analog guage were reading the same temperature, I was sold... I did buy 2 guages (twin cookers) and both gauges did the same thing. If the analog guage had been off, I would have probably adjusted it with the adjustment screw in the back of the guage. I've used other gauges and this guage is great, I need to buy two more of these for the twin warmers.