Feature●a selection of professional variable resistance box, which has good stability and high accuracy.●Great instrument for learning physical and electrical experiments, easy to operate.●The variable resistance box teaching instrument is suitable and wonderful for school, laboratory use.●The contacts resistance is stable and reliable when the resistance box is properly used to rotate each group of knobs.●Made plastic material, safe and durable, which could be used for very long time.Description
/
- Size: 14X10X5CM.
Package Including
1 x Variable Resistance Box