When Charles Fitzgerald retired recently after 23 years in Du Pont's Petroleum Chemicals Gulf Coast Regional Laboratory in Houston, Texas, his friends made sure he had a supply of tools used in measuring octane of gasoline to take with him. The collection, however, was carefully welded together into a piece of sculpture so that Charley wouldn't have to use them again. The finished piece of "art", standing nearly 28 inches high was topped with a "bouncing pin", a frequently troublesome assembly in known engines that has since given way to an electronic device for measuring known intensity.

Photo is dated 1972.

Photo measures 8 x 10 inches.