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A. JAEGERS 1-7/8" DIAMETER HALVING ADJUSTMENT DISK/OPTICAL FLAT
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photo for larger views) |
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Item No: L3556
Price: $15.00
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| Labeled as Jaegers catalog #1433. Halving adjustments are used so that two images can be adjusted so that there is no overlapping or duplication (for line of sight). This looks like better than 1/4 wave surface accuracy. 1/2" thick, probably pyrex. Limited supply! |
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