What tools are required for this swap

25 inch extended shank (3-1/4")

allowing contractors to restore or modify Johnson Controls VG7000 Series valve assemblies without full replacement

How do I calibrate this gauge to atmospheric pressure

Schneider Electric (Barber Colman) AM-764 Kit Els PW 17895 What tools are required forWhen you're outfitting commercial HVACR units with Schneider Electric damper linkage kits, the Barber Colman AM 764 is the industry standard for bridging the gap between a damper actuator and the drive shaft. This heavy duty damper linkage kit is engineered for technicians who need a reliable mechanical connection when direct coupling isn't an option. The AM 764 damper linkage kit features a robust actuator crankarm and high grade ball joints designed