Thank you very much for the helpful information you provided above and the link to your site, which is an excellent resource I will use many times, I am sure. Your suggestion about having a Master and an every day gauge is a great idea and one I will follow with the Accutire digital and other dual foot gauge. Yes, I do have an air compressor on which I would like to install an inflator with a gauge. I'd certainly welcome your specific recommendations on a dual foot gauge to keep in the motor home and an inflator/gauge that will remain connected at home. I don't mind spending a bit more for quality. Thanks again for taking time to help me, and hopefully others.