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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.social/users/CTD/statuses/111611744187647356">CTD (ctd@mastodon.social)'s status on Thursday, 21-Dec-2023 13:57:50 JST</a><a href="https://mastodon.social/@CTD" title="ctd@mastodon.social"><img src="https://gnusocial.jp/avatar/100439-48-20240116140841.webp" width="48" height="48" alt="CTD" style="position: absolute; left: 0; top: 0;">CTD</a></section><article><p>Circular Slide Rule of the Day<br><a href="https://mastodon.social/tags/Retro" rel="tag">#Retro</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/2480709#notice-4908709">In conversation</a><time datetime="2023-12-21T13:57:50+09:00" title="Thursday, 21-Dec-2023 13:57:50 JST">about a year ago</time> <span>from <span><a href="https://mastodon.social/@CTD/111611744187647356" rel="external" title="Sent from mastodon.social via ActivityPub">mastodon.social</a></span></span><a href="https://mastodon.social/@CTD/111611744187647356">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/1996742">A circular slide rule, from when slide rules were all the rage</a></label><br><a href="https://files.mastodon.social/media_attachments/files/111/611/743/932/258/206/original/86612b87d47959af.jpeg" rel="external">https://files.mastodon.social/media_attachments/files/111/611/743/932/258/206/original/86612b87d47959af.jpeg</a></li></ol></footer></blockquote>

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CTD (ctd@mastodon.social)'s status on Thursday, 21-Dec-2023 13:57:50 JST CTD
Circular Slide Rule of the Day
#Retro
In conversationabout a year ago from mastodon.socialpermalink
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1. A circular slide rule, from when slide rules were all the rage
  https://files.mastodon.social/media_attachments/files/111/611/743/932/258/206/original/86612b87d47959af.jpeg

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