Air Pressure Gauge - K-Pump No more bending your neck to see the pressure. This is the latest version. Inflating your boat to the correct pressure extends its life and increases performance. No more estimating the correct pressure of your boat! Now you can inflate your tubes with accuracy. Reads from 0 to 15 PSI. Durable rubber housing and inner shock absorber protect the gauge. Gauge is designed to be used on Leafield, Summit Hakey-Roberts and Military Valves. Use with the Military Valve simply remove the tip at the end of the gauge stem insert into the valve. Gauge is warranted for one year against defective materials or workmanship with proof of purchase. You should never inflate your boat above 3 PSI and the floor only to 2.5 PSI. Protect your inflatable investment by checking the pressure often on those hot days. Don't leave home without it!