Manual-reading miter saw protractors are used to find angles on corners. These protractors have two flat arms that extend from a central pivot assembly where angle scales are marked. These arms rotate to come flush with two adjoining surfaces that need to be measured thus providing the required angles for the cut. They typically have a single-cut scale and miter-cut scale, so when an angle is needed for a miter cut, there is no need to do extra math. They are commonly used in carpentry, plumbing, and general building trade applications.
Allows direct transfer of the work angle to the miter saw in 3 steps with no calculations.
Takes error-prone calculations out of the process of miter cuts to ensure perfect miter joints every time.
Simply set your miter saw to the angle that you read.
Upside down or backwards, the reading is always correct.
Two scales: red scale and arrow show the angle for a miter joint, while the black arrow and scale provide the angle to fit a single work piece to an angle.