Model 156226 Soil Resistivity Test Kit by M.C. Miller

Designed to Store and Carry all Soil Resistivity Test Equipment


The MCM Soil Resistivity Kit is designed to conveniently store and carry all the equipment required to calculate the resistivity of soil. The equipment provided is all that is necessary to perform the Wenner Four-Pin and Soil Method, as outlined by the ASTM G 57-78 Standard. This kit is designed for use with the new Miller 400A Resistance Meter, however it ships with a foam insert that allows it to store the MC Miller 400A meter, if desired.

The MC Miller 4-Pin Test Reel (Cat No. 44700) has been designed and engineered to be used in conjunction with any one of the MCM's multi-combination family of meters, the MC Miller 400A soil resistance meter or similar four-terminal soil test instruments.

The test setup utilizes the mechanics of the "Four Electrode Method," which was developed by the National Bureau of Standards and is commonly known as the Wenner 4-pin Method. The resultant resistivity is the average resistivity of the soil (electrolyte) to a depth equal to the spacing between adjacent electrodes (soil pins). The maximum depth (pin spacing) of this standard test set has been designed for 20 feet, which is recommended for standard survey.

The Soil Resistivity Reel is made up of four (4) separate, color-coded lead wires of: 5-foot (yellow), 25-foot (orange), 45-foot (red) and 65-foot (black) lengths. Lead wires are harnessed together and mounted on a lightweight handheld reel. Wire ends at the reel are affixed to female banana plug jacks (mounted in the center hub area) while the opposite ends are terminated with Mueller 27-C clips. Two-foot, color-coded, jumper leads with banana plug ends are supplied with soil resistivity reel to facilitate connection between the REEL and your test meter.

All lead wires and jumpers are made of our own No. 16 AWG, 105 strand copper wire with PVC insulation. In addition to our color coding of the wires, all ends are clearly labeled as to their connection point.

Typical Setup for Measuring Soil Resistance at 20 ft depth


The Soil Resistivity Test Kit contains the following items: 


MC Miller Soil Resistivity Kit
Dimensions 19" x 17" x 8".
Weight with MC Miller 400A - 20 lbs
Weight without MC Miller 400A - 13 lbs
Cat No. 156225
MC Miller Model 400A
Soil Resistance Meter

Supplied separately for kit pictured at right.
Cat No. 44106
MCM Soil Resistivity Reel
with four color-coded wires

MCM Cat No. 44700
Heavy Duty Soil Pins
MCM Cat No. 44720
Plexiglas Soil Box
Inside of dimensions: approximately 2.5" wide x 9.0" long x 1.5" deep
(4 cm x 22 cm x 3 cm). Corners are rounded for easy cleaning.
Current plates are made of stainless steel.
Potential pins are made of brass and are easily removed.


Our Soil Resistivity Test Kit is designed to conveniently store and carry all of the equipment required to determine the resistivity of soil. The equipment provided, when combined with a 4-terminal resistance meter, such as the Miller 400A or the Miller 400D, is all that is necessary to perform the Wenner Four-Pin Method, as outlined in the ASTM G57-06 Standard, as well as the Soil-Box Method.

NOTE: M. C. Miller resistance meters are sold separately from the kit but each single meter is accommodated by the carrying case.

The Soil Resistivity Test Kit contains the following items:

  • Large soil box (280 ml)
  • Soil container test leads set (2 red, 2 black)
  • 4-Pin Test reel leads Set (4ft Long)
  • 4-Pin soil resistivity test reel (#44900)
  • Stainless steel T-handle soil pins, 18" long, 3/8” diameter (quantity of 4)
  • Carrying case