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.htmlThe 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.