Amprobe DM73C Pen Probe Digital Multimeter with Built-in Test Probe

The Amprobe DM73C digital multimeter is an average-sensing, auto-ranging multimeter with built-in test probe for measuring voltage and resistance in electrical testing applications. The meter measures alternating current (AC) voltage and direct current (DC) voltage to 600 volts (V) and resistance to 34 megaohms. The meter measures 7.8 x 1.1 x 1.4 inches (H x W x D, where H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; and D is depth, the horizontal distance from front to back), and it can be carried in a pocket when not in use. It has a liquid crystal display (LCD) that shows readings both in digits and on a 34-segment bar graph. An audible continuity sensor confirms that the circuit conducts electricity, and a diode test detects whether the circuit's diodes work properly. The hold function keeps a reading on the display, even after the meter is disconnected. An auto power-off mode turns off the unit after 10 minutes of non-use to conserve battery life, and a low-battery indicator signals when the meter's batteries need to be replaced. Amprobe began life in Long Island, NY in the late 1940's under the name Pyramid Instrument Company. In 1960 the company name was formally changed to Amprobe Instrument Corporation. Amprobe continued to design, engineer, manufacture and distribute product from its Lynbrook, NY location until it was merged to form ATP and relocated to South Florida in late 1999.