Detheredge

I have a LaserPoint II cutter and i'm noticing some issues with it not being accurate in the dimensions of the decals I'm cutting so I made 5 squares to test the accuracy (.5x.5", 1x1, 1.5x1.5", 2x2", 6x6"). I noticed that the .5" square and the 1" square were accurate when measuring it with a ruler, but as the squares got larger I noticed it would be 1/16" to small and grow as the sizes of the squares went up. When I measures the 6" square, I was off 3/16 of an inch (4 13/16" was the measured dimensions). Has anybody else had this issue? It's probably something easy, but I just haven't found a solution on the forum. Im running MacOS with Sure Cuts A Lot 3 Pro. I know it doesn't seem like much, but I have a few projects where the true dimensions of the final product need to be exact. Thanks!!