METAL BODY REPAIR - OD1653 - LESSON l/TASK 1
(2) If the square is distorted, as shown in (B) (figure 11 on the
previous page), the diagonals are no longer the same length; Y is no longer
than X.
(3) If this figure frame (B) is visualized with movable corners, it can
be seen where pressure must be applied to make it square; at the corners of
the Y diagonal.
(4) The original length of either the sides or diagonals need not be
known.
By making comparative measurements of the diagonals, it will be
shown that when they are again equal, the frame is again perfect as it was
in (A).
(5) In (C), it is possible for the diagonals to be the same if the
distortion is exactly at the mid point of side (A).
Therefore, by a
comparison of sides, (A) can be straightened until both side (C) and side
(A) are the same length.
These illustrations show how it is possible to
align a body or frame by measuring the body or frame alone.
FIGURE 12.
DIAGONALS OF CUBES ARE
ALWAYS OF EQUAL LENGTH.
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