Rationale:
GRAPHICS REDRAWN. CIRCULARITY REQUIREMENT REMOVED FROM ØB. PERPENDICULARITY REQUIREMENT REMOVED FROM REFERENCE ØC. TABLE 1 REDRAWN TO ADD ‘REF’ TO DIM C AND D. NOTE 3 REVISED TO STATE CURRENT QML NOTE. GENERAL UPDATING OF SPECIFICATIONS BEING SPECIFIED HEREIN. CHANGE BAR NOTE REVISED. NOTE 17 ADDED.
