These Parker glycerine filled pressure gauges are available in 63mm diameter and 100mm diameter. Each diameter size comes in 3 styles of mounting - stem (or bottom) mounted, panel mounted and flange mounted.
Below is a selection of Parker pressure gauges (UCC pressure gauges) in both sizes. The catalogue can be read here.
If you cannot find the pressure gauge you need or you need help choosing please email firstname.lastname@example.org or call 01452 730774