Pressure gauge thread size question.

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smizak

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Hoping some experienced keggers can help me out here.

I've been given an old regulator. It holds pressure, no leaks, however the low pressure gauge is 100PSI full scale so the resolution is a little tricky when dialing in low pressures. I bought a Micromatic Model 624, 0-60PSI, 1/4 NPT right hand thread. My problem is that the thread size on the old gauge is somewhat smaller and for the life of me I can find no adapter or even a gauge that is less than 1/4 NPT. Any ideas on what I can do? Thanks and likes in advance...
 
If 1/4 NPT is too big then it's likely 1/8 NPT or BPT. Just guessing though. I'm pretty sure my regulators are 1/4 NPT.

Picture of old and new gauge threads?
 
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