This caliber is very strong and well made from solid brass. The large dial is clearly numbered and easy to read. Compared to other known sensors, its accuracy is excellent. I'm deducting 1 star for two reasons. First, the rubber grommet is loose and easily falls out unless the gauge is screwed onto the faucet head, making it easy to lose. Second, the dial is numbered in tens (0-20-40-60 etc.) with 5 divisions in between. This means that each mark corresponds to 4psi, making it difficult to calculate the readings straight away. Aside from those two minor issues, the display is excellent.
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