Royal Purple (lubricant manufacturer) Royal Purple (lubricant manufacturer) Royal Purple is an American manufacturer which produces lubricants for automotive, industrial, marine, motorcycle, and racing use. It is known primarily for its line of synthetic Royal Purple Motor Oil products used in gasoline and diesel engines. They also produce other fluids including gear oil, transmission fluid, power steering fluid and industrial gear, bearing, engine, and hydraulic oil. Other products include chassis and bearing grease, lubricant aerosol, aerosol chain lubricant, and firearm lubricant. The company was founded in 1986 by John Williams, a synthetic oil developer and later consultant. Due to a customer who said he
Unertl Optical Company Comments from John Robert Unertl - http://forum.snipershide.com/threads/is-unertl-optics-co-still-in-existence.364/ Unertl Optical Company Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1934 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper, Carlos Hathcock, during the Vietnam War. John Unertl founded the John Unertl Optical Company in 1934 and the company manufactured military sniper scopes during World War II. The company was most notable for its MST-100 (7.62mm) and MST-150 (.50 caliber) 10× scope used by the USMC Scout-Sniper