this may be checked by means of plumb line
{"Image DocumentName": "This may be checked by means of plumb line.", "Image ImageDescription": "DEFECTS IN FRAMES. The only prominent defect that usually occurs in the frames due to accidents is the alignment fault. This may be checked by means of plumb line. The vehicle is placed on a level surface and by suspending plumb line from different points on each side of the frame, their position on the ground is marked. The vehicle is taken away and the diagonals are measured between corresponding points. These should not differ by more than 7 or 8 mm. If any of the corresponding diagonals do differ by more than this amount, the frame is out of alignment. The possible cause then may be one of the following: The dumb irons or side members may be bent. Cross members may be buckled. Some rivets may be loose or broken. If the damage to the frame members is small, they can be repaired by means of a hydraulic jack and wringing irons. If the damage is more, the bent frame member may be heated to straighten it. Alternative may be to cut the damaged part and weld a new one instead. A line from which a weight is suspended to determine verticality or depth- plumbline.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}