Knopp K-3 Phase Sequence Indicator, 60-600V With Case. Made in USA. Very nice #2

The Knopp K-3 Phase Sequence Indicator is a reliable tool for indicating the phase sequence of a circuit, ranging from 60-600V. Made in the USA by the reputable brand Knopp, this indicator ensures accurate readings and comes with a convenient case for easy storage and transport. Perfect for businesses and industrial settings, this high-quality product is designed to provide clear and consistent results for electrical testing and inspection needs.