William 'Wee Willie' Davis

William "Wee Willie" Davis (December 7, 1906 – April 9, 1981) was an American film actor.

He had previously been a wrestler. He worked in the Jefferson County Jail in Louisville in 1972-75 as the gym guard.

He was also an engineer and contributed to the invention of the Glowmeter, an early Heads up display that projected a car's speed onto the windshield. A fellow wrestler, "Prince Ilaki Ibn Ali Hassan" (real name Agisilaki Mihalakis), who also fought as the "Mad Greek", was the primary inventor.

...
Wikipedia