NSP Airwing Pump
The Airwing pump is sold separately as a lot of NSP Airwing users already own a (kite) pump or have a compressor on site.
The gauge of the NSP pump indicates pressure as you force the piston downward, showing you when the required 7PSI is reached.
Using the gauge correctly
By design, the NSP Airwing pump displays the current pressure inside the Airwing's bladder when the piston is at its lowest point in the pump's cylinder. Make sure to use the adapter during the inflation process.