Multimeter<br />Designed specifically for scientific equipment, and this unit automatically selects proper range when testing electrical functions of instruments and sources of their strength. Digital display 38 inches high and includes the appropriate resistance or voltage unit and refers to the negative polarity with the offering. Unit ranges are from 1mV to 400V AC DC and 0.1 to 2, 000, 000ohms with accuracy to 2 units 2. Sampling rate of twice per second. Characterized by audible beep to check continuity.