Cropico RM6-N3 Decade Resistance Box

An accurate six decade resistor box with a resistance range from 100 ohms to 100 Megohms and ±1% accuracy for simple resistance selection and adjustment.
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Cropico RM6-N3 Decade Resistance Box

The Cropico RM6-N3 is a 6 decade resistance box that covers the resistance range from 100 ohms to 100 Megohm with an additional 1 kilo ohm resistor available at the terminals enabling the user to make a simple divider. The RM6-N3 uses 0.60 watt resistors with a specified accuracy of ±1% and a maximum permissible voltage of 250V DC. The RM6N3 six decade resistor box offers a quick and simple way of selecting and adjusting a wide range of resistance for experimental, development and calibration work in electrical laboratories and workshops. This Cropico resistance calibration box is made from high impact polystyrene designed to be highly durable and also extremely portable due to its light weight.

Decade Accuracy Max Current
10 x 100Ω ±1% 75mA
10 x 1kΩ ±1% 25mA
10 x 10kΩ ±1% 7.5mA
10 x 100kΩ ±1% 3.5mA
10 x 1MΩ ±1% 0.5mA
10 x 10MΩ ±1% 0.18mA


Supplied with in-house Calibration Certificate.

  • Range: 100 Ohms to 100 Mega ohms
  • Resistors: Metal film 0.6W at 70°C.
  • Temperature Co-efficient: ±100 ppm/°C
  • Switches: Contacts silver plated brass.
  • Contact resistance: 10 milliohm.
  • Positive click mechanism.
  • Insulation Resistance: 50,000 Mohm.
  • Residual Resistance: 0.1 ohm
  • Case: High impact polystyrene
  • Size: 190 x 140 x 70 mm.
  • Weight: 490g