30-09-2020, 04:23 PM
This is on Amazon in US, so has an NPT connector. Face looks reminiscent of the David Harcourt gauge. There is a Kodiac version that looks identical, but presumably has better internals at twice the price.
https://www.amazon.co.uk/dp/B00FBPPY1Y/r...DFb427RV5G
https://www.amazon.co.uk/dp/B00FBPPY1Y/r...DFb427RV5G