Disclosed is an adjustable locator for a machining lathe for machining a pipe or similar work piece. The locator includes a locator pad having a main body and a shoulder which is inserted into a socket in the stationary member of the machining lathe. The locator pad also includes an extension plate which can be both axially displaced or adjusted relative to the main body and shoulder to thereby position the clamshell lathe relative to the workpiece.
