New Old Stock / NOS engine oil dipstick GM 1956 1957 1958 1959 1960 1961 1962 1963 1964? Chevrolet Buick Pontiac Olds....Corvette? It measures about 23-1/4" from the tip to the cap. It is embossed CAUTION DO NOT OVERFILL .... FULL ...ADD 1QT. and has an embossed 'M'. It is in very ngood condition with minor shelf wear.