How to Create a Straight Line with Curves?

  / bazarko  
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When you're working on refinement or simply checking tools like surface plates and straight edges, having the ability to measure these instruments with absolute precision comes in handy, far exceeding the quality of precision of the tools themselves. This becomes possible by utilizing a special reversible micrometer, and the double measurement technique that I demonstrated in this video. I developed the tripod for the microcator myself, and also devised the measurement methodology, although I had come across general information about this technique earlier, it was not detailed. If anyone knows more about this method, please feel free to reach out to me. Thank you for watching.