㈠Features:
     ZX21 rotary type resistance box is a more value resistor which is made up of by six                switches, and each decade resistance is composed of  by five  resistance  elements, it 

     can switch any value  in 0——9, The resistor  can be  in the  range of 0——99999.9Ω

    and can transform the minimum step of 0.1.Which has a small volume and convenient to use.

    ZX21 DC resistor accords with《Laboratory on DCresistor》of JB/T8225-1999 industrial standard

㈡Applications:

     ZX21 DC resistor can be used for adjusting the resistance value in the DC circuit, which has low ohm value and is widely used in laboratory, school and used as measurement of electricity and other experiments for factory and R&D institution.

㈢Power Rating:

   0.2W，0.3W
㈣Tolerance:
  B(±0.1%)，D(±0.5%)，F(±1.0%)，G (±2%)，J (±5%)