Quickly indicates rotation direction
Detects AC fields
Detects solenoid valves

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 2.3 inch
Height : 0.6 inch
Length : 3.5 inch

Item Weight: 0.32 ounce (View shipping rates and policies)
Shipping Weight: 0.32 ounce (View shipping rates and policies)

ASIN : B00VV6CLPO

Product Description

This very useful device quickly indicates rotation direction. It can also be used to detect the magnetic field produced by AC. The red and white disc spins on its axle when the tester is placed close to a sufficiently strong AC field. When placed close to a pump that is turning the disc will also rotate. No plumber or heating contractor should be without this very handy keyring tool.