Using it and the SDP2 to calculate EER. And the STA 2 is getting a work out.
Had to use my 557 for temps and pressures...feel like a caveman with out my 570.
The AK 900 goes into service today on a YJ 46081 manifold and all 3/8 Appion hoses and 1/2" evac hose by YJ. Too big for the case I bought so I put my SMAN 4 head protector on it....My God it's Heavy!