What Is a Square?
A square is a metal, L-shaped tool used to check the accuracy of right angles. There is a similar tool called a finger rectangle (also called a finger metal), but these are clearly distinguished. The square is thicker on the short side of the right angle and serves as the base. The base is placed in close contact with a flat surface to check for accuracy. A finger rectangle is a right-angle scale made of a thin metal plate on both sides. When checking right angles, a square is accurate when in contact with a reference surface, while a finger rectangle is not.
Uses of Squares
Squares are used to measure right angles and dimensions. They are used to check the squareness of metal, wood, and other materials when machining, sharpening, and charring. There are several types of squares. Squares with a base have a wide base on the short side of the right angle so that it can stand on its own. By placing the stand on the floor or base, it is possible to check if the part or furniture is right-angled, as well as to mark or mark the exact right-angled position. It can also be used to check if power tool blades are attached at right angles.
Features of Squares
The following is a description of the features of each typical type of square:
- Square with a base/full square/flat square
All of them are L-shaped and are used to measure whether squares are right-angled or not. The short side of the pedestal/complete squares has a thick base, while the flat squares have the same thickness for both the short and long sides. - Mighty square
It has an L-shaped form and looks the same as squares with a base, but the edge of the long side where it connects to the long side of the base is angled at 45°. In addition to measuring right angles, it can also be used for marking and inking at a 45° angle. - Trapezoidal square
Trapezoidal shaped with four internal angles of 45°, 135°, 90°, and 90°, respectively. The short and long sides of the trapezoid are trapezoidal. Precise measurement, marking, and inking of 45° and 90° is possible. - Free-form square
This square consists of two boards connected by a screw. When the screw is loosened, the two plates can rotate to any position and can be stopped at any angle. It is used to set the angle by matching it to the angle on the drawing or to the angle of the actual object. - Protractor
A free type of hand square. The protractor consists of two plates with the center of rotation at the center of the protractor, so it can be used to measure, mark, and ink the desired angle.