Thread: gauge fitting

hey everyone. Got a never been used but older EGT gauge to fit to the 4WD to make sure I don't cook the bloody thing.
Cheap enough but its missing the part I'd imagine.
Soooo after a compression fitting to suit a probe 1/8" wide. 1/8th npt or bsp thread
been doing a little looking and some are hideously priced. Im not paying 70 bucks for one.
Some seem down to the 15 buck mark which is a bit better.
any of the car gurus out there have a particular supplier (or maybe an old good one in the toolbox) they can recommend?
Cheers