WW2 USAAF Goggle, Variable Density, Cased – Polaroid A nice goggle in its original metal can. Intended for USAAF aircrews, equipped with a turning dial on the front allowing the pilot to alter the tint of the lens, enabling them to see tracer rounds and not be easily blinded. They failed to gain popularity in the airforce and were phased out soon after the Second World War. They were more accepted by AAA gunners than aircrew, as it was one more piece of equipment that the aircrews would have to carry onto an airplane. The red flipping lens is present,…