Miter saws will have a few positive stops along the mite gauge to help you easily find the right angle. Typically, a Miter saw’s miter gauge will go from zero all the way upto 45 degrees, in both directions.
For my miter saws, my miter gauges read 0, 15, 22.5, 30, 31.6 and 45. Of course you’re able to set the gauge to any degree within that range as well, I just have positive stops at those common angles.
Positive stops never really get in the way. It is very simple to navigate to the needed angle and set up for an accurate cut. You might be wondering why some odd degrees have positive stops on the miter saw, and it’s for good reason we’ll get into below.