This single head Pencil Tire Pressure Gauge comes with both a deflator valve and a white nylon indicator bar for easy reading. Unlike our competitors, our Milton® pencil gauges use machined parts. Offers a range of 5 to 50 psi or 40 to 350 kPa. To be used on tractor tires or wheels filled with air/water/liquid. Tire gauges provide accurate, long life with trouble-free performance. Always check tire pressure when tires are cold.