Question about Scuba Gauge thread size

[Brian Pasic]

Seems like a simple question but I am confused... I am looking to buy a pressure gauge for my regulator but don't know how to measure the thread size that is needed.. One gauge that I like says that it has a 7/8" threaded hose. Does that mean the hose is 7/8 of an inch around or the male metal fitting... Also this gauge has a 1 3/4" diameter color-coded face does that mean the front of the gauge measures that distance across end to end??


How to I measure the thread size and diameter on the current gauge I have to see if another is compatible. Thank you very much.

 

[Tortuga68]

Welcome to scubaboard

Unless you have old or unusual gear, the high pressure hose will be standard size and most any submersible pressure gauge should fit; although you might need to replace the 'spool' which is the bit that goes in between the hose and the SPG which come in different sizes:



...but usually you can get one with your new gauge: Submersible Pressure Gauges

Personally I don't like colours all over the guage, just clutters it up and makes it harder to read; also I would get a 2" gauge in brass & glass, more durable

If you post links to or the model of the gear you're actually talking about - including the first stage you're connecting it to - it would help

this gauge has a 1 3/4" diameter color-coded face does that mean the front of the gauge measures that distance across

Yes