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.