Tape measure sliding door mechanism.
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Previously:
https://www.homemadetools.net/forum/...165#post115787
https://www.homemadetools.net/forum/...253#post138590
https://www.homemadetools.net/forum/...923#post137512
https://www.homemadetools.net/forum/...150#post138297
https://www.homemadetools.net/forum/...519#post135921
https://www.homemadetools.net/forum/...196#post134710
