well i measured the thread on a screw that fits. its 18 threads per inch.hard to see in the pic but thats the one on the gauge that matches the nuts are all clean and in good shape.not 1/4-20

Last edited by oldnfuelish; Thu Mar 25 2010 03:42 PM.
Looking for gas,oil related clocks,especially neon and spinners .clock repair available. Mick