To Insert Blocks that Divide an Object into Equal Intervals

Click Drafting tab > Draw panel > Point drop-down > Divide.
Select a line, arc, circle, ellipse, polyline, or spline.
Enter b (Block).
Enter the name of the block that you want to insert.
Enter y (Yes) to align the blocks with the selected object. Enter n (No) to use a rotation angle of 0 degrees.
Enter the number of intervals between the blocks.