The picture below shows a larger view of this 1961 Upjohn Pharmaceutical Manufacturing Company Advertising Premium Lithographed Tin Ruler. This rule is not dated but it was from Upjohn's 75th year which was in 1961. It isa 12” or 31 cm ruler. There are many drug names imprinted on it in green on a white background. Under them are dosages that the medicines are made. The ruler was Made In U.S.A. and it measures 12-3/8'' x 2''. It appears to be in excellent to near mint condition as pictured.