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Well, I for one knew that.

hackaday

2025-04-22 18:33:22

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British Wartime Periscope: a Peek Into the Past

hackaday.com/2025/04/22/britis…



British Wartime Periscope: A Peek Into The Past

We all know periscopes serve for observation where there’s no direct line-of-sight, but did you know they can allow you to peer through history?  That’s what [msylvain59] documented when he p…
Hackaday

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