With the standard MiterSet gauge, you can set any angle in 1/2 degree increments. The MiterSet segments lets you set the angles needed to cut segmented circles very accurately, and some of these settings are odd angles that need to be accurate out to 3 decimal places. With the Segments gauge, you set it by the number of segments that you want in the circle, and the gauge does the rest. The only math needed is to figure out how long or short each segment needs to be to get the desired size of segmented circle.
For good results with either of these gauges, it's important to use a miter fence with a 3/4 x 3/8 bar that also fits the miter slot of your table saw very accurately, as any side play in this fit will create errors. The MiterSet gauges have a slot in the center for the bar of the miter fence to fit into, and the bar of the miter fence must also fit in this slot with no side play. The MiterSet Gauge Manufacturer offers a different version of these gauges for ShopSmith owners, as well as Metric based miter fences and table saws.
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