What is the primary function of the pressure gauge on the right shoulder of an SCBA?

The primary function of the pressure gauge positioned on the right shoulder of an SCBA (Self-Contained Breathing Apparatus) is to provide air supply readings. This gauge is essential for firefighters and emergency responders as it indicates how much breathable air is left in the SCBA cylinder. Keeping a close watch on this gauge allows users to monitor their air supply and plan their movements accordingly during firefighting or rescue operations. This ensures that they can make informed decisions about when to exit hazardous environments and maintain their safety.

The other options do not relate to the primary function of the pressure gauge in an SCBA. The temperature measurements and battery levels are monitored using different instruments, and body temperature is not a parameter that the SCBA pressure gauge would measure. Understanding the critical role of the pressure gauge in air supply management is vital for effective and safe operation while using SCBA gear.