Purpose and core function Used in electrostatic experiments to determine the potential difference between two charged bodies, including whether the potential is positive or negative. Serves as a single instrument to measure potential difference, verify energization status, and identify charge polarity. What the instrument does Measures the potential difference between two charged bodies. Verifies that an object is energized and indicates whether the potential is positive or negative. Inspects insulation of the object and tests for induction electrification. Key benefits and why you need it Clear, direct readings of potential difference and polarity to support accurate results. Quick verification of energization status to prevent errors in experiments. Insulation health check and induction detection help maintain experimental integrity and safety. Simple, focused tool for common electrostatic experiment tasks, reducing the need for multiple instruments. Important attributes to note Function: determines potential difference, polarity, energization status, insulation integrity, and induction electrification. Compatibility: designed for use in electrostatic experiments and related laboratory setups. Performance: provides straightforward assessment of charge relationships and insulation condition with minimal setup. Use scenarios 1) Classroom electrostatics demonstration Students compare the potential difference between a charged rod and a neutral object, confirming charge polarity and energization status to illustrate basic electrostatics concepts. 2) Insulation inspection during device testing Before a physical test, verify insulation integrity and check for unintended induction electrification on insulating components to ensure accurate readings and safe operation. 3) Experimental setup verification In a research or lab setup, confirm that test objects carry the expected potential and polarity prior to conducting experiments that depend on precise electrostatic conditions.