Starrett edge finder no. 827 mb double ended tapered

What is for sale: Starrett edge finder no. 827 mb double ended tapered

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L.S. STARRETT EDGE FINDER NO. 827 MB
DOUBLE END EDGE FINDER WITH 3/8 AND 1/4 STEPPED CHUCK END.
OTHER END IS 3/8 STRAIGHTAND 5/16 TAPERED TO A POINT. 3 1/8 TOTAL LENGTH
MADE IN USA OLD FACTORY STOCK BUT MAY HAVE BEEN USED SO I DON'T SELL AS NEW.