This vintage meter from Amprobe is a versatile tool for measuring voltages and currents. The remote sensing voltage detector can be used to safely measure electrical parameters in hard-to-reach places. Whether you're a collector of antique mercantile tools or a professional electrician, this meter is a must-have for your tool kit. Its sturdy construction and reliable performance make it a valuable addition to any collection or workbench. These units have not been tested for proper calibration or functionality. They are as is only! Thanks for checking it out and hope to hear from you soon!