Features: Can be part of the circuit for Ohm's Law experiments. Used as an additional resistor to extend voltage measurement range. Used to measure unknown resistance values. Suitable for measuring electromotive force and internal resistance of power supplies. Functions as a known resistor in circuits to regulate current. Ideal for electricity experiment teaching and educational purposes. Specifications: Attenuation Range / Minimum Step: 0 to 9999 ohm, 1 ohm step Shell Material: Plastic Dimensions: 14 x 10 x 5 cm / 5.51 x 3.94 x 1.97 inch Color: Black Display Type: Analogue and Digital Accuracy Class: As specified Operating Temperature: As specified Testing Voltage: As specified Material: Plastic Package Includes: 1 x Simple Resistance Box Note: The package includes only the items listed above. Other products are not included. Lighting and display settings may cause slight variations in the color of the item as shown in the image compared to the actual product. Measurement error allowance is +/- 1-3 cm.