This Bierer AV series High Voltage Tester is a reliable tool for measuring the voltage range from 0-500kv. It comes with a bushing adapter and case, making it easy to use and transport. and the brand Bierer is known for its high-quality performance. This tester is perfect for use in various industries, including business and industrial settings. It falls under the category of Test, Measurement & Inspection and is a must-have for professionals in the field.