Image:Porro-prism.png
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Porro prism;
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 01:09, 9 October 2004 | 250×260 (6 KB) | DrBob (Talk | contribs) | (pngcrushed version) |
| 22:15, 16 March 2004 | 250×260 (8 KB) | DrBob (Talk | contribs) | (Porro prism; {{msg:GFDL}}) |
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