These are to be used much like feeler gauges.They are 20 mm tall and long with the width being 1,2,3,4,5,10,20 mm in the main set. Use all of them for 45 mm. There is a 19 mm one due to my miter slot on my table saw.. I will be printing these at 10 percent just so they don't crush too easily. Double check the dimensions after printing.

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