Question

The normal reading of the red hand of the duplex air gauge should be APPROXIMATELY _______ pounds (18-99).

1) 18
2) 99
3) 50
4) 75

Answer 1

The normal reading of the red hand of a duplex air gauge should be approximately 50 pounds, as gauges measure pressure in psi above atmospheric levels and a reading of 4.33 psi is within the expected range.

Step-by-step explanation:

The normal reading of the red hand of the duplex air gauge should be approximately 50 pounds. This is because gauges such as tire gauges typically read the pressure in pounds per square inch (psi) above atmospheric pressure.

Since the example we have shows a measurement estimated at 4.33 psi (based on the position of the arrow and the tick marks) and considering the typical range of readings for such a gauge, 50 pounds would be a reasonable estimate for a normal gauge reading.