The ETB-240 Voltmeter Characteristics Trainer is specifically designed to help students and professionals understand the concept of “Ohms per Volt” in analog voltmeters. It enables hands-on learning about how internal resistance affects the accuracy and performance of voltmeters across different voltage ranges. This model includes an adjustable voltage source, selectable range settings, and built-in meters for precise measurement and observation. It is ideal for foundational experiments in electrical and electronics labs, making it an essential tool for understanding voltmeter loading effect and its practical implications.