The Model DT105 Pocket digital Gauge is the best value in a highly accurate pocket gauge. These gauges feature instrument accuracy through solid state digital technology. They Auto Zero and self calibrate for temperature and atmospheric pressure when switched on. An easy to read display holds the reading, in 0. 5 PSI increments, for 13 seconds. Drop tested for shock resistance. Batteries last for up to 5 years in normal use. They are easily replaceable with standard watch type batteries. Proper tire pressure has been shown to increase a car's gas mileage and improve tire life, handling performance and safety. With today's high cost of new tires, not to mention high speed driving safety, you will want to equip your car's glove box with one of these new gauges soon.Pit Stop USA offers Pressure Inc. Standard Digital Tire Pressure Gauge DT105 at low everyday prices. Be sure to check out all of our products from Pressure, Inc. including Pressure and Inc. Digital Tire Gauges.