WWII Boeing Stearman Radial Engine Piston Desk Clock(Polished Edition)Aviation piston clockAviation piston clock This WWII Boeing Stearman industrial modern art desk clock was created using a 1940's WWII Jacobs R-755 (or often called the L-4) radial engine piston. The R-755 was used during World War II and powered airplanes including the Avro Anson, Cessna T-50, Avro Cadet, Anahuac Tauro, Cessna AT-17, Cessna 195, Funk F-23, Grumman Ag Cat, Kellett KD-1, Morane-Saulnier MS-505, Waco CG-15, Waco YKC, YKC-S, YKS-6, Boeing Stearman 75 and the Beechcraft StaggerwingAviation piston clock WWII Boeing Stearman Piston has been polished to a mirror finish.Aviation piston clock WWII Boeing Stearman Piston Measures 5 inches in Diameter X 3 Inches HighAviation piston clock WWII Boeing Stearman Clock Face is 3 1/2 Inches in Diameter Aviation piston clock Machined at a 70 degree angle for perfect viewing Uses one AA Battery (not included)