this post was submitted on 19 Apr 2025
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Photography

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Rotary Converter, IRT Subway Substation 13, Midtown Manhattan, 2017.

All the pixels, no Metrocard required, at https://www.flickr.com/photos/mattblaze/32992380451

#photography

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[–] karlauerbach@sfba.social 2 points 2 months ago (1 children)

@mattblaze@federate.social I hadn't had my morning coffee and my first thought when I saw this photo (of the rotary converter) was "oh, that is a top view of a Curta calculator." (I used to be pretty good on a Curta.)

[–] mattblaze@federate.social 3 points 2 months ago (1 children)

@karlauerbach@sfba.social a very, very large one.

Curta Type II mechanical calculator

[–] chris_bloke@mastodon.acm.org 2 points 2 months ago

@mattblaze@federate.social @karlauerbach@sfba.social continuing the theme of misunderstanding what you're seeing, I saw that and was thought it was a clockwork camera lens for a second (not that I think there is such a thing, but my brain isn't that quick today).