Push the keep on and mark a pencil line all the way round the hole inside for the latch.
How to fit a mortice lock to a door.
Taking and using measurements 1.
Remove the keep and drill a 16mm hole about 10mm deep.
Usually the professionals measure up to 36 inches from the bottom where the lock they set.
This will be your guide when.
To avoid any error you should mark the position where you want to install the lock on the door.
Measure and mark out a vertical central line.
Please put a mark for keyholes strike plate and latch on the side of the door.
Measure where the lock will fit on the door.
As a guide the height of your lock should be about 1 metre high.
Fit the lock into the door and secure using screws.
Place the body of the mortice lock against the side of the door and mark the top and bottom edges of the main body on the side of the door.
Fit the lock and check the positions of the door handle spindle and key hole adjust these if necessary.
Trade expert michael demonstrates how to quickly fit a 5 lever security mortise 5 lever mortise lock and handles in this easy diy video by studhawk.
Use the 10mm chisel to square the hole up cutting at the top and bottom first.
Carefully remove the timber inside the lines using the same technique as for the door latch.
Using your measurement mark out both the top and bottom of the latch.