Dietz Acme inspector,  2nd Generation flat handle .
Stamped for Southern Pacific Railroad ( S.P.Co)
Dietz Fitall globe with a light amethyst color. 

Condition- dark brown patina , no heavy rusting or pitting present. 
Mirrored glass reflector does have some speckling .
Correct tall cone and burner.
In as found condition 

No visible condition issues 

** has not been oil tested **