Features: Can be part of the circuit for Ohm's law applications. Used as an additional resistor to extend voltage measurement range. Used to measure unknown resistance values. Used for measuring electromotive force and internal resistance of power supplies. Used as a known resistor in circuits to regulate required current. Suitable for physics electricity experiment teaching. Specification: Attenuation Range / Minimum Step: 0 to 9999 ohm, 1 ohm step Shell Material: Plastic Dimensions: 14 x 10 x 5 cm Color: Black Quantity: 1 Piece Display Type: Analog and Digital Accuracy Class: As specified in product details Operating Temperature: As specified in product details Testing Voltage: As specified in product details Package Includes: 1 x Simple Resistance Box Note: Light and screen differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.