This Radial Engine Piston Desk Clock belonging to the Polished Edition collection is made in the USA. The industrial modern art desk clock is crafted from a 1940's radial engine piston called the WWII Jacobs R-755. The piston was used to power such airplanes as the Boeing Stearman 75, YKS-6, Morane-Saulnier MS-505, and the Avro Anson. The piston is buffed to achieve a mirror finish and has been machined at a 70-degree angle for sheen. The desk clock measures 5" in diameter and 3" in height. The clock face is 3 1/2" in diameter.