Hello, I came over here on the recommendation of another member of a different lock forum. I am looking to find out what the correct key blank is for some old Yale lever locks.
If you would like some backstory; a friend of mine has a locker bank with 6 different lockers in it. One of which seems to be damaged since it can be turned and unlocked without a key. My friend wants to keep the locks in the lockers and has asked me to impression keys for them.
I know I will need flat steel keys but I do not know which ones. The closest measurements being the ilco 1370 which is showing up at .050" thickness and .305" width. The only picture I have appears as though the blank is much longer than it needs to be.
Or should I go with something that's got different measurements?

The length from the bottom of the lock to the keyway is about 1.25", and the keyway measures .06" thick and .312" wide.

Any help is appreciated!