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MOUNTED DOUBLET 51MM DIA X 95MM FL W/ ETCHED LINES IN BRASS CELL.
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photo for larger views) |
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Item No: L4416
Price: $5.00
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| These were brought back from Wollensak Optical. Cell is 60mm diameter on top and 50.5mm diameter on the bottom. 18mm thick. Has 10 vertical lines spaced 3mm apart. Cemented doublet, not corrected for color. Interesting piece. Uncoated. |
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