Factory calibrated... perfect right out of the box Positive stops at 0, 10, 22-1/2, 30, and 45 degrees Brass pin allows quick changes between positive stop angles 24" bar with 5 bar adjusters eliminates the play between the bar and the miter slot 24" Fence section with patented Flipstop Cut perfect miters consistently with our Precision Miter Gauge System. A number of unique features makes this one of the most precise miter gauges on the . A 24" fence section with patented Flipstop and self-adhesive measuring tape is included.