描述:
Calibration/Substitution, Compact 6 Decade Resistance Box Compact, durable case manufactured from high impact polystyrene Metal film resistors and silver plated brass contact switches Particularly suitable for use in electrical and electronic industrial laboratories Required resistance selected by the 6 rotary switches An additional 1KΩ resistor is available at the terminals, enabling the user to make a simple divider ### 十进箱
