This 2-in-1 tool contains both a 0-99 PSI tire pressure gauge and a tread depth gauge, helping you keep your tires properly maintained for safety and longevity. Jumbo backlit display for easy reading in All conditions. LED light brightens your work area so you can use the tool in low light conditions. Retractable tire depth gauge on end of tool measures tread depth and shows wear status via colored indicators on backlit display. Maintaining adequate tread depth is key to on-road safety in inclement weather. Tru-Flate is part of the Plews & Edelman group. Plews manufacturing and sales Corporation was originally founded by R.G. Plews in 1927. At that time, the railroad industry was the primary focus for the companys extensive line of oil cans. As the Transportation industry went from trains to passenger cars and trucks, Plews shifted their focus to developing the tools necessary to service this new mode of Transportation. Fast forward 90 years and Plews has become part of Plews & Edelman. Today, Plews & Edelman is a leading designer, manufacturer and distributor of a broad range of automotive parts and tools sold to the vast majority of mass merchant, retail auto parts stores and wholesale automotive parts and industrial distribution outlets, worldwide.