I saw this device on You Tube http://pressureswitchtester.com/default.aspx Anyone have one or thinks it would be worth getting one to troubleshoot pressure switches.
It's an interesting tool, but I don't come accross too many pressure switch problems that aren't a result of another problem. It's rare to have to replace pressure switches. Usually the problem is caused by a venting or drainage issue. It looks like you still need a manometer to use this tool. Personally I would stick with a good dual port manometer and multimeter in troubleshooting.