Sprag from Spa Wood Mine
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资源简介：
These were used as a brake for the mine tubs. Miners would throw this into the wheel spokes to stop the tubs - a very dangerous occupation if you liked to keep all your fingers! Sometimes a wooden shaft could be used but this all-metal sprag provided a better grip. Source: Objaverse 1.0 / Sketchfab
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Zenodo创建时间：
2023-12-28
