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General Electric Exposure Meter H.P. 70379
Wheel is free and moves.
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1980s Vivitar Zoom Thyristor Electronic Flash 2500 w/ Instructions
1980s Vivitar Zoom Thyristor Electronic Flash 2500 w/ Instructionsuse vivitar SB-4, HVP-1 and HVP-2 Power Supplies3 flash coverage positions (wide, normal, telephoto)AC Adapter Receptacle6″ x 2.5″ x 1.5″
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Vintage Metraphot Exposure Meter (for Leica and or Retina)
Not sure how to test it, the needle does move as you handle it.
