The process of measuring velocity pressure at several locations across a cross section of duct is known as making _____________ reading.

The process of measuring velocity pressure at several locations across a cross section of duct is known as making a traverse reading. This technique involves taking multiple pressure measurements at various points across the width and height of the duct to obtain an accurate representation of the airflow velocity. By conducting a traverse, technicians can identify variations in velocity throughout the duct system, which is critical for ensuring even air distribution and effective system performance.

The importance of this method lies in its ability to capture the complexities of airflow in ducts, allowing for the identification of any discrepancies or inefficiencies that may arise in the system. This data is vital for balancing the air distribution, optimizing system efficiency, and ensuring comfort in the conditioned space.