Nirvana Posted October 27, 2013 Share #1 Posted October 27, 2013 Hmm, I was cleaning my work table and placing items in their proper areas. I have four metallic rulers, both showing the metric and imperial units. By pure curiosity I placed the shortest one, 15.24cm - 6" next to my 30.48cm - 12" and my two 45.72cm -18" and found differences. None measured as the other. The difference is so slight, but could probably cause error when mixed. Now I marked the 15.24cm and 45.72cm that are almost identical. The other two to be donated to friends 3rd grader school kids. A high quality digital caliper needs to be purchased. sonicmcdude and trippwj 2 Quote Link to comment Share on other sites More sharing options...
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