Answer :
Final answer:
The gauge used in an air test should be calibrated in increments of 1 psi, as this provides the finest precision for measuring pressure in items such as tires. This unit of measure is reported to three significant figures.
Explanation:
The subject matter of this question pertains to the calibration of a pressure gauge used in an air test. When discussing the calibration of such gauges, the gauge should be calibrated in increments that allow for precise readings.
If we are seeking a gauge that is calibrated in the smallest increments possible, the best answer would be a gauge with increments of 1 psi. This delivers greater precision and allows for a fine-grained understanding of pressure changes.
The symbol psi stands for "pounds per square inch" and it is a unit of pressure often used to quantify the amount of pressure in items such as tires. Measurements like this are typically reported to three significant figures for accuracy and consistency.
