I have been using the K-Pump Kwik Check Standard Pressure Gauge
for that last two years to verify that air pressure on my i14T
remains within the recommended 3.5 psi - 5 psi range. I do not know if the gauge is calibrated to 100% accuracy, but I find it is better to have a single point of reference than none at all.http://www.k-pump.com/products/pressure-gauges/k-pump-kwik-check-standard-gauge.html
The photo on the K-Pump
site does not depict an included adapter tip, which fits the Hobie
inflation valves perfectly.
I use a portable lithium-ion battery powered pump to quickly inflate the i14T
to @3.5 psi, then top up with a K-Pump 400
to @ 4 psi, checking pressure with the gauge.
The gauge is especially useful in hot weather, since pressure can rapidly increase as air heats up in the inflation chambers. If the gauge indicates the pressure is approaching maximum recommended levels, you can quickly bleed the valves as needed.