* Clear indication system: The built-in indicator effectively displays the magnetic field and rotation direction of most circulation pumps, providing an for instant image of the pump's performance for quick diagnosis. * Essential tool for seasonal inspections: This circulation pump rotation tester is extremely useful at the of the heating season, allowing the user to verify the operation of the circulation pump and identify possible blockages after a long period of inactivity. Features: * Versatile: In addition to testing the circulation pump, the device can also check the operation of the oil burner solenoid valve, making it a versatile tool for a variety of heating applications. * Humanized design: The convenient design, with red and white screws rotating in with the pump, allows the user to easily and visually confirm the direction of the pump's rotation., Weight: 0.20723452628 Pounds, Manufacturer: NONDK