Pressure gauge thread size?

[PLAGUE]

Gent's any one know what thread is on a BSA R10 pressure gauge?.
Looked on knibbs and bagnall's but they don't state it.
Ta for any info.

Steve.

[acmsarh]

It Should be 1/8th bsp or bspt but there is a very close metric thread of M10x1.

[PLAGUE]

Thank's acmsarh.

Steve.

[angrybear]

Don't know the thread,
but having asked google Bagnall & Kirkwood supply an alternative direct replacement for £24.73.

[acmsarh]

Just cross checked and the bsa thread is 1/8 bsp , Best fittings do a 23mm 1/8th gauge for £17-50.

[PLAGUE]

Thank's gent's - was hoping to use a digital gauge but the smallest i can find is 25mm and the BSA is 23mm - can't go to 25 as it obscures the fill port - just stick with what i've got i guess.

Steve.