Single, 4 Pin Soil Test Reel offering a maximum pin spacing, with respect to a 4-pin linear array (Wenner methodology), of 20 ft (approx. 6.1 m).
The reel is positioned at one end of a 4-pin linear array. Please see the Instruction Manual to view the single reel configuration.
The single reel wiring system comes with a 4-Pin Test Lead Set (Item #44698) used to connect the four reel wires to a 4-terminal resistance meter (see Miller 400A or Miller 400D).