Mark the centre of these lines and drill a 2mm pilot hole.
How to put a door handle on a new door.
Measure up the desired height of the door handle from the bottom edge of the door on the edge opposite the hinges using a tape measure.
Use a tape measure to measure from the inside edge of the door to the center of the hole in the door to get the backset measurement then choose a handle that fits this backset.
Choose a new door handle that fits on your door.
If your new door handle attaches to the door at a point below the lower borehole like ours you may need to drill another hole to accommodate.
Now drill over the pilot hole with a spade drill piece.
The diameter of the drill price should be 2mm more than the 2 inner latch lock lines in the diagram below.
Make a pencil.
Typically the knob is centered at 36 inches.