I think Festo, Wika, and SMC have a 'micro gauge' that's designed to be inserted into a 1/8" 'push-lok' or 10-32 pneumatic type fitting.
::rummages thru wall o' catalogs::
Huh. I know for a fact that I have a couple of mid-pressure 1/2" dia Festo's in my chowder box, but I'm not seeing them in the book or listed on their website. Nor SMC's. Maybe at lunch I'll wander across the parking lot and ask the sales dudes at the SMC office . . .
