Variable resistance box - product description Key benefits - Simple and easy to use, the variable resistance box provides comfortable, straightforward operation for adjusting resistance in testing and experiments. - Resistance substitution decade with stable, reliable contact resistance when selecting each group of resistors, ensuring consistent readings and dependable performance. - Versatile resistance set that can act as additional resistance to extend the range of a voltmeter, enabling broader measurement capability with a compact device. - Ohm resistance function oriented to measuring resistance and assessing the internal resistance of a power supply, useful for accurate circuit analysis and testing. What this product does - Provides adjustable resistance through a decade-style arrangement with stable contacts for repeatable measurements. - Extends voltmeter range by adding known resistance in series or parallel as required for your experiments. - Serves as a practical tool for measuring resistance values and evaluating the internal resistance of power supplies or other sources. Key attributes - Function: variable resistance box with resistance substitution decade; suitable for precision resistance adjustment and meter range extension. - Compatibility: designed for use with common lab meters and power supplies to aid testing, calibration, and educational experiments. - Size and form: compact, easy-to-handle resistance box that fits typical laboratory setups and bench testing environments. - Material and build: constructed for reliable electrical contact and long-term use in standard lab conditions. - Performance: stable contact resistance and repeatable settings to support accurate measurements and consistent results. Usage scenarios - Meter calibration and circuit testing on a electronics bench: use the device to simulate a range of resistance values, verify meter accuracy, and observe readings across different load conditions. - Power supply testing: measure the resistance and internal resistance of a power supply to assess stability and performance under varying load. - Educational lab exercises: demonstrate how resistance networks affect circuit behavior, teach decade box operation, and provide hands-on experience with resistance measurement and instrumentation. Note - This description reflects the product’s stated functions: variable resistance box with resistance substitution decade, capable of extending voltmeter range and aiding resistance measurements and power supply analysis.