Scale for 3D designs and prints 20-50mm

Helps to scale both 3D models and compare real world items for general scale.
Best used to confirm scale of item in slicer programs before printing.
Used to compare already printed/purchased miniatures and pick a size for new models before printing.
I keep one printed version and one digital version to compare at all times.
Great for checking calibration/accuracy of printers. 20-50mm in 5mm increments.
Holes in base plate to compare miniature bases in size (1-1.5")