Morris Minor Body Alignment Diagram & Frame Dimensions - Fig 12:3 Diagonal Check

This is page 155 from a workshop/repair manual showing Fig. 12:3, a body alignment (horizontal alignment) checking diagram for the Morris Minor. A cutaway isometric line drawing of the Morris Minor monocoque body shell is shown with plumb-bob projection lines dropping from four pairs of reference points (labelled A through D) onto a level floor, where diagonal measurement lines are drawn to check for body distortion. A dimension of 34⅛" CRS (centres) is marked at the rear of the floor pan. A reference table gives the transverse distances between paired points: A, front end of torsion bar, 22⅞ in. (58.1 cm.); B, rear end of torsion bar, 22⅞ in. (58.1 cm.); C, over ends of rear anchorage bolts, 42 23/64 in. (107.59 cm.); D, over ends of rear spring bracket bolts, 42⅞ in. (108.9 cm.). The caption explains the method: project the points onto a level floor with a plumb-bob, establish a centre line with large compasses, and check that the diagonals intersect on the centre line; failure to intersect, or significant side-to-side differences in the same measurements, indicates body distortion. Useful for anyone assessing accident damage or chassis squareness on a Morris Minor.