-30-0-30 Galvanometer Scientific Current Sensor Sensitive Ammeter Electric Current Detector Analog Display -30-0-30 A Galvanometer Used for Detecting and Measuring Electric Current in Physics Experiment and Teaching Specification: Material: Plastic + Electronic Components Sensitive Range: -30-0-30A Size: 133x97x100mm Accuracy: 5% Application: Eon, Laboratory, Scientific Research, Industrial Use Environment Temperature: 0°C to +40°C Relative Humidity: ≤85% Features: Simple pointer zeroing, high accuracy, easy operation, and sensitive detection of electric current. Widely applicable in eonal institutions, laboratories, scientific research, and industrial environments. Transparent protective shell helps prevent dust accumulation and reduces risk of damage. Large and clear analog reading for easy observation and measurement. Instructions: Check that the pointer is aligned with zero before use. When connecting in series in a circuit, use the "G" terminal correctly. Always disconnect power when making connections. When measuring current, connect the device in series. If the pointer deflects to the right, current flows into the positive terminal; deflection to the left indicates reverse current flow. Package Included: 1 x Galvanometer Note: Due to lighting and screen setting differences, the item's color may vary slightly from images. Slight dimensional variations may occur due to manual measurement.