1920's NOT WORKING Gauge is approx. 3 inches long and 1/2 inch in diameter  , appears to be plated brass . 10 to 50 lbs. SCHRADER BALLOON TIRE GAUGE  Marked : A . SCHRADER'S SON INC . BROOKLYN N.Y. , U.S.A. followed by patent dates . Has original leather pouch with snap closer , shows plenty of wear but no rips and snap still works . 100% satisfaction guarantee