For those with a particular interest in lever locks click here (You will need powerpoint).
Theres not everything in there, but most of the five lever locks i ever encounter.
Note: this is something i created for my own personal use and id prefer it not to be distributed outside of this site as intended solely for hobbiest/locksmith reference.
If you have no understanding of lever locks id strongly suggest you dont risk drilling a lock!
Measurements taken from top center of keyway and for lever picking only.