These manual-reading protractors resemble basic school-style protractors. They have a square or round head with a 180° arc marked on the body. Select models include a blade that may be etched with graduations, while others may require a rule or straight edge to read accurately. These protractors are commonly used for woodworking and metalworking applications.
Manual-reading miter 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. 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.
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