So I'm thinking about retiring my Alnor (analog) Balometer that's older than some of you reading this (I may have used it a couple of times a month over the 20-odd years I've had it). I need a 2x2 to read from less than 50 CFM to as much as 1,000 CFM or so. Lighter weight would be nice, but I'm not too "electronic", so memory, etc. is not important. I'd appreciate any suggestions. Many thanks!