The product description does not list the pipe thread size of this gauge. One of the questions answered incorrectly stated that the gauge had a 3/4" NPT thread. This is NOT true. The best I can find is that the gauge uses a 1/2" BSPT thread . BSPT is a pipe thread standard not widely used in the US, and BSPT to NPT adapters were prohibitively expensive (not to mention hard to find). So I sent the meter back. The return was approved without any problems. I'm giving it 2 stars because it seems like a reasonable counter, but the lack of setup information or, worse, inaccurate information in the answers to questions make it a poor choice for most uses.
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