A small version of the protectoscope (about 5" wide, 3/4" thick x about 3") was used the M5 Stuart, the M8/M20 armored car as well as the WW2 Canadian Lynx scout Car. These were made by the Standard Products Co (Thermo Plastics Division). They had other obscure uses too. They are a combination of a plexiglass core, thin mirrors and a black plastic protective shell outer. ........ Brian
Last edited by BCA; 13-02-15 at 22:06.
Reason: correction
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