Variable resistance box with a 0 to 9 ohm range and five switchable areas for flexible use. This device provides precise control of resistance values in a compact form, making it suitable for delicate low ohm applications. Material and durability - Made of Bakelite for long lasting performance and reliable resistance values. - Built to withstand repeated use in laboratory and workshop settings. Performance and environmental tolerance - Operates reliably in a temperature range of 5 to 35 C. - Stable performance in humidity from 25 to 80 percent. - Designed to maintain accurate resistance measurements under typical lab conditions. Key benefits - Easy to adjust resistance quickly with five selectable sections. - Provides repeatable, low resistance values for calibration and testing. - Durable construction with reliable resistance stability over time. Specifications at a glance - Resistance range: 0 to 9 ohms - Switchable areas: 5 - Material: Bakelite - Operating temperature: 5 to 35 C - Humidity range: 25 to 80% Use scenarios - Calibrating low ohm instrumentation and multimeters in electronics labs. - Prototyping and testing analog circuits that require precise low resistance values. - Educational demonstrations of Ohm's law and resistance changes in classrooms or workshops. Compatibility and applications - Suitable for electronics laboratory setups, calibration tasks, and teaching labs where accurate low resistance adjustments are needed.