Name: A 50-year perpetual calendar made from just two pieces of brass. #perpetualcalendar #engineering
Uploaded: 2026-10-09T00:35:12+00:00
Duration: 76 s
Channel: @encyclopedia_excel
Description: TikTok video by @encyclopedia_excel: 10,300 views, 488 likes, 16 comments, 9 shares, 42 saves. Engagement 4.98%.

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