I remember when I was in High School, in my printing class- we had a Guillotine- cutter - (no power)- it had a tape measure band, you would move this band to the size, sometimes the band would be off the true size. My first job in printing had to have the cutters calibrated every now and then, and we had two, but they did not cut the same size, its like using a tape measure, they can measure differently; that why you use the same tape measure on precise work, because one could give you a different size. John
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