The internal edges of each lenses are made to connect in the event the lenses are flipped down. The lenses are fixed to just one key and cable (spring ) procedure that enables the two (2) lenses to maneuver concurrently. The complete assembly is mounted to a brass plate, which https://thesocialvibes.com/story78627/the-2-minute-rule-for-cairns-n5a-new-yorker-for-sale