Checking Seam LengthsChecking that two adjoining pattern pieces are the same length, measuring at the seam (not the cut edge).
Image 1In this case, we are checking that the back side seam length (A to B), is the same as the front side seam length (A to B plus C to D).
Image 2I am starting from the waist level moving upwards. Where the front side seam dart point B is reached, a point/line is marked on the bodice back.
Image 3The Bodice Front is moved so that the bodice front point C aligns with the mark previously made, and the line length C-D on the bodice front is checked against the remainder of the line length on the bodice back.