Your new SRS1 Refrigerant Scale will be with you day in and day out for charging and recovery. It's just big enough to fit a canister and has the ruggedness you expect. No wasted material. The walls are made of thick aluminum to maintain accuracy over the life of the product. Hang the controller on a vented condenser so it's easy-to-see and use the backlight when the sun's going down late in the day. The magnetized back holds it tight. Quickly set the charge/recover alarm using the big numeric key pad no more scrolling digits. Set the tank on the platform, dial in how much you want to charge and wait for the alarm to tell you it's time to close the valve. Throw it over your shoulder when you need your hands-free to carry other equipment or to climb up a ladder. Rubber feet and a rubber pad soften the impact of daily use. Your new scale is easy-to-use and does what you need. It has all the right stuff for HVACR.