Absolutely authentic and accurate reproduction of the 57 mm diameter casing for Luftwaffe pressure indicator Fl 20516 (e.g. Me 262) and oxygen pressure indicator Fl 30496, used on most WW II aircraft types. This reproduction is based on factory drawings and analysis of preserved original items. Weight and haptics are almost identic to the Bakelite frequently used for genuine casings.
With thread for instrument glass holder and bores. It can of course also be used as a generic 57 mmm housing for other instruments. Ideal basis for home cockpit builders!