Features: -Can resolve part of the circuit Ohm's law -Used as an additional resistor to measure the voltage range -Used to measure unknown resistance -Electromotive force and internal resistance used as a measurement source -Used as a known resistor in a circuit to regulate the required current -It is used in the teaching of physical electronics experiments. Specification: Shell material: plastic Dimensions: 14x10x5cm/5.51x3.94x1.97 inches Colour: Black Attenuation Range / Mini Step: 0 to 9999ohm, 1 ohm step Package includes: 1 * Simple Resistance Box Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. -Can resolve part of the circuit Ohm's law -Used as an additional resistor to measure the voltage range -Used to measure unknown resistance -Electromotive force and internal resistance used as a measurement source -Used as a known resistor in a circuit to regulate the required current -It is used in the teaching of physical electronics experiments.