Miller 400A
Analog Resistance Meter

M. C. Miller beats the competition again with its breakthrough low-cost, durable, high-performance Analog Resistance Meter

Whether you need to measure soil resistivity or the resistance-to-earth of an electrode, such as a ground rod or an anode, the Miller 400A has you covered …………..

• Determine the average earth resistivity to a specific depth – 4-Electrode Application
• Determine the resistivity of a soil sample, or of a liquid, via an electrolyte (soil/liquid) box – 4-Electrode Application
• Measure the resistance-to-earth of a buried electrode, such as a ground rod, or an anode, for example – 3-Electrode Application
• Measure the resistance between two buried electrodes, such as two ground rods, or two anodes – 2-Electrode Application

• Rugged, lightweight case - safe to use on wet ground
• Weatherproof, even with lid removed - IP67 rating for dust and water intrusion
• Convenient case lid removal for ease of movement, with test leads attached, to new measurement locations
• Resistance measurement range from 0.01Ω to 1.1MΩ
• Resistance measurements are unaffected by any stray interference signals that may be present in the earth during the measurements, due to use of narrow band-pass filters
• Runs on a set of C-cell alkaline batteries...no need to periodically recharge the unit or plug it into a power source
• Storage Temperature: -22^oF to 122^oF (-30^oC to 50^oC)
  Operating Temperature: 32^oF to 131^oF (0^oC to 55^oC)
• Dimensions: 12" W x 10" L x 5" H (31cm x 25cm x 12.5cm)
  Weight: 7 lbs (3.175kg)

More information - Miller 400A comparison study