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TIL Kelvin's Balls are the two soft iron balls attached to either side of a ship's magnetic compass binnacle. Invented by Lord Kelvin (of °K temperature fame), they are adjustable to counteract th...
Post Reply RetroFed Forum Forum Index » Today I Learned (TIL)
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Link: https://en.wikipedia.org/wiki/Binnacle
This is an automated archive made by the Lemmit Bot.

The original was posted on /r/todayilearned by /u/oceanicplatform on 2026-08-16 21:10:04+00:00.

Original Title: TIL Kelvin's Balls are the two soft iron balls attached to either side of a ship's magnetic compass binnacle. Invented by Lord Kelvin (of °K temperature fame), they are adjustable to counteract the local magnetic deviation caused by a ship's metallic structure.
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