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RARE MILITARY BRASS FILTER WHEEL
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Item No: M2528
Price: $18.00
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Four filters mounted in a brass plate 5-7/8 inches diameter. 1/8 inch thick with a 3/8 inch hole in the center. The filters are clear, amber, red, and variable density. Each has a clear aperture of 35mm with the exception of the variable density filter which is 40.5mm. There is a gear that controls the variable density polarizing filter. Filters are held in with a retaining ring, so can be easily removed. Our understanding is that this is WWII war surplus. Not a clue what instrument it was made to go in. Weighs 1 pound 5 oz. Great condition. Only have a few.
One of our customers advises that this was made for the USN Mk74 Telescope. Thanks Harry. |
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