Last Updated:2025/11/29

I disassembled the binoculars to inspect the Porro prism and found a hairline scratch on one face.

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I disassembled the binoculars to inspect the Porro prism and found a hairline scratch on one face.

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双眼鏡を分解して、像の向きを変えるために光学機器で使われる反射プリズムを検査したところ、端面の一つに細い擦り傷が見つかりました。

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