Flight Helmet, Gentex H-4, US Navy, US Marine Corps 1950's B-50 to correct the altitude reading

to correct the altitude reading as required

The anchor symbol of the US Navy appears on the rear of the instrument

If either of the two glass lenses were shattered during a firefight

it serves no other function and requires no other radar in the aircraft

while introduced during late WWII

Flight Helmet, Gentex H-4, US Navy, US Marine Corps 1950's B-50 to correct the altitude readingHere is an Flight Helmet made by Gentex, type H 4, size Medium, used by pilots of the US Navy and US Marine Corps Aviation during the mid 1950's. According to Andrea Salimbeti's website: The {Gentex} H 4 was a further development of H 3. The rigid shell with reinforcing ridges, in different shape respect to the H 3 model, is constructed of a fiberglass cloth reinforced with epoxy resin. Also for this model a cloth inner helmet which incorporate the