What Is The Use Of Square
The square is mainly used for positioning; high point with blisters;
The rod is made of steel strip with scale on it. The top grade is also made of stainless steel.
The diameter of a circle with a square test
1, in the round side round string 1#, chord length in scale range;
2, with the amount of 1# string square center, center point for the vertical 2#;
3, in the circle of a string 3#, string 1# and about 90 degrees, in the range of chord length scales;
4, synchronous sudden 3, the vertical line 4# of the 3# string;
The intersection of 5, 2# and 4# lines is the center of the circle.
6, with the square measure radius, radius diameter = *2