Ideal for routine spot-checking of ESD protective materials. It's designed for measuring both the surface resistivity and the surface-to-ground resistance of both static-dissipative and conductive materials. Seven color-coded LEDs on this auto-ranging instrument easily identify static dissipative and conductive ranges from 105 to >1010 ohms. This unit features simple one-button operation, durable high-impact case, and 9V battery (included) for ease of use and maximum portability.