This is a replica Revi 16b guight used during WW2 by the Luftwaffe. Includes optional mount for use as a digital speedometer HUD using an inexpeive GPS unit. Never itall/place this in any vehicle without fit coulting with your local law enforcement (as I did). Forward glass levedetents, dimmer switch, and rear access hinged door all have capability for articulation as originally intended. Itructio are included. Aircraft which used this model were: Dornier Do 335, Focke-Wulf Fw 190 A and D, Ta 152, Heinkel He 162, Messechmitt Bf 109 F, G and K, Me 163 and Me 262.