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19.5MM OPTICAL WINDOW WITH GROUND CENTER
(select
photo for larger views) |
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Item No: L3348
Price: $2.25
or 5 for $10.00
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| Interesting window, 19.5mm diameter by 1.5mm thick. Center 6.5mm is fine ground on one side. Made by Perkin Elmer. Probably the ground part is for an image from some scientific device. Unused. |
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