Father Inire's Mirrors
The Urth list — 1 messages, 1 voices, 31 Jan 2003
https://urth.darkrealm.vip/thread/urth/3826
Apparently, Leonardo da Vinci built a set (he certainly drew and described one, though he did not directly mention the peculiar properties found with the BotNS version), presumably modulo the laser in the middle, but it's hard to tell with Leonardo.
If I were trying to see along dimensions other than the standard three, this would be one of the ways I'd go about it.
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