An HVAC testing kit that was my dad's. It fires up fine and I can cycle through the different modes by the rotary dial. I can't vouch for the metering attachments/etc or overall functionality of the kit, other than it appears to be in pretty good shape overall and all connections appear clean and undamaged. The battery well for the 9v is clean, no signs of battery leakage, etc. The one side of the case has all kinds of hoses, etc.