05099801 LAU Pitch Gauge Tool to Measure Correct Pitch and Rotation Direction

The 05099801 LAU Pitch Gauge Tool is an OEM diagnostic tool designed to quickly and accurately measure the pitch and rotation direction of HVAC fan blades. Essential for matching replacement blades, verifying correct airflow orientation, and preventing performance loss, this compact gauge provides precise pitch identification for both clockwise (CW) and counter‑clockwise (CCW) rotation. Built for field technicians and shop environments, it ensures proper fan selection, improved system efficiency, and reduced callbacks.

Set both blade and gauge on a flat surface. Turn the back arm to match the pitch of the blade and read the dial. Works for CW and CCW fan blades. Also known as part PG5099801