Mikasa AG-500 Digital Pressure Gauge

International referee ball pressure gauge. Digital readout to three decimal places.

• Push button bleed valve. 
• Needles stored inside so you wont lose them.
• Automatic on/off. 
• Measures in PSI, BAR, KG and KPA

Simple to use. Just turn on, and insert needle into ball valve and check the reading. A useful tip is to slightly over-inflate the ball then use the digital gauge's bleed valve to bring the ball down to correct pressure specification.