140-142mm or 144-148mm Impeller Pitch Gauge Set

Watcon impeller Pitch Gauge for all 140-142mm or 144-148mm Impeller
Sometimes when impellers are mass produced, there are subtle differences that can affect performance
Use this simple tool to measure the pitch angle and blade length of each blade throughout its circumference
This enables you to make adjustments to the pitch where needed
Great for fine tuning, making minor changes or verifying pitch when sending impellers off for repair