IMPORTANT - This will NOT fit all Fuhr Locks
If the lock case does not look like the picture (with 3 screws connecting the gearbox to faceplate) it will not work.

Fuhr new style gearbox for lift lever with an 8mm spindle 92mm centers 
This Fuhr Mortise lock case will only replace the newer style multipoint locks that are attached to the faceplate with three screws.
There is an older style, that does not have screws and this will NOT work.
See Additional images to verify which lock you have.

Method to Connect: 3 Screws
Faceplate: None
Backset: 1-3/4 inch (45mm)
Handle PZ: 3-5/8inch (92mm) 
Spindle Hub: 5/16 inch (8mm) 
Screw Thread: M4 
Top to bottom connection Screw: 7-13/16 inch
Bottom Screw to Center Screw: 4-1/4 inch
Top Screw to Center Screw: 3-9/16 inch

Note: To change handing
Step One: Remove the Hex head screw holding the spring latch. (see image)
Step Two: Reverse the latch and re-install screw.