How to check a Straight Edge Ruler

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Tom give a demonstration on how to see if your Straight Edge Ruler is truly straight.
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You are correct, of course. Thank you for a clarifying comment.

Tom

CarbideProcessorsInc
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Sorry, that is not a very accurate way to check a straight edge. You are flipping it incorrectly. You should flip it over towards the camera so that the ends ate still oriented the same way. Then draw another line. Any discrepency between the two lines will be double the straight edge error.

lyndonp
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I bought instruction from woodprix and I build it very very cheap.

romaineathey
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