Telescope Mirror Grinding Demonstration
0:42
Added: 3 years ago
From: NG9D
Views: 8,625
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  • excellent

    

    zmerc1960 1 month ago

  • Nice machine, nice video!

    Messiermarathon 2 years ago

  • Does the text really have to pop on the center of the video? It's really annoying.

    netkaveh 3 years ago

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