Accutire MS-4021B Standard Digital Tire Gauge for $8.87. Shipping is free on orders over $35. If needed, use this Filler Tool to pad the order to qualify for free shipping. Here is a screenshot for your reference. It features automatic shut off to prevent deflation, an LCD display and is accurate to within 0.05 PSI, reading air pressure from 5-150 PSI in 0.5 pound increments.