speed square
Rafter angle tool
A speed square is a triangular measuring tool used in carpentry, combining the functions of a try square, miter square, and protractor.
The right-triangle shape allows quick marking of 90° and 45° angles, and the ruled edges help measure and mark rafters, stairs, and other angled cuts: He used a speed square to mark the roof pitch.
Also called a rafter square or triangle square.
- rafterSloped roof support
- carpenterTimber construction tradesperson
- triangleThree-sided plane figure
- 45-degreeHalfway to perpendicular
- angleGeometric measure of rotation
miter cut · layout · framing · roof · roof pitch · pitch · scribe · marking · aluminum · Stanley · Swanson · guide · saw · plumb · level · hip · valley · stair
speed squareframing square
L-shaped carpentry gauge
carpenter's square · steel square · bevel gauge · T-square · protractor
speed, square, speeds, sped, speeding, speedy, speedily, speediness, speedster