Industry standards permit aircraft tires to lose as much as 1% of their pressure each day, and even mild underinflation can allow temperatures to rise exponentially, sometimes resulting in heat-induced failures even while taxiing, company officials note. Underinflation can cause poor tracking and landings or even total failure of the tire or the wheel. Underinflation lengthens the takeoff roll and reduces the brakes’ predictability and effectiveness.

Tool Testing Lab’s backlit digital gauge reads in PSI, InHg, Oz, SqIn, Inches or Feet, H2O, Kg, sqCm, Kpa, and Bar, with ½% tolerance and as fine as 0.1PSI resolution. It also holds peak readings, and features a built-in bleeder valve.