This is the foot pump I normally use for pressurizing rockets in the field. It has an accurate pressure guage up to 10 bar. The footpump comes with several adapters for inflating airbeds, footballs... It is convenient to have a pressure guage on your pump, since the guage on the launcher is sometimes hard to read when you are pumping at 5 to 10 meters away from the launchpad for safety reasons. Also, a footpump is less restraining on your back than a handheld pump.