Here's the one I've used for 5 years or so. I picked it up at Home Depot, IIRC. It fits in the toolbox in the bed of the truck and can handle the tires on our 5th wheel that require up to 120 PSIG - I believe it's rated 155 PSIG.
Rusty, Sandy, 2 Shelties (Coby & Callie) & Conner the Campground Cat
2016 Ram 3500 Longhorn Crew Cab 4x4 Dually, 385/900 Cummins, Aisin AS69RC, 4.10 axle, 39,100 GCWR, 30,050 trailer tow, B&W RVK3600
Current: 2014.5 DRV Mobile Suites 38RSSA #6972 - Previous: 2004 MS 36RE3 #1291