Rivet Positions - Top to Middle:70mm  Middle to Bottom:130mm

Operation: Lift Lever

Latch reversal: Depending on the date of manufacture either:

Push in the latch and undo the screw in the back of the lock case, remove the latch, reverse and reinsert.

Push in the latch and undo the screw in the side of the lock case to remove the latch, reverse and reinsert.

Pull down the serrated button to rear of the case and at the same time pull out and reverse the latch, sometimes the serrated buttons are held in place by a tiny travel pin so the serrated button will need to be pushed down hard with a screwdriver to break the pin.