Selby's versatile Till Lock is a half mortise lock with horizontal and vertical keyways.
It will fit into 1 3/4" diameter round mortise.
The lock is 2 1/2" long x 1 5/8" wide x 11/32" thick. It is constructed of Steel and is available in a Brass Plated Finish.
Fits keys identified as LBOW, L252KEY, and LDKEY.