Designed for use by non-technical personnel, such as crews, servicemen, meter readers, etc., but also suitable for the most experienced engineers and technicians.

20 megohms input resistance practically eliminates low potential readings caused by resistance in the external circuit due to contact resistance of the reference electrode. This condition is frequently encountered in city work and in frozen ground.

• Low cost
• Rugged
• Easy-to-use
• Structure to earth potentials
• + 2 V and + 20 V ranges
• Low-battery display
• Optional electrode extension

• Large 1/2" LCD digits.
• Weatherproofed neoprene gasket.
• 20 MΩ input resistance.
• Solid state impedance amplifier.
• Operates on one small 9 V transistor battery.
  Low drain - long shelf life.
  Battery easily replaced and readily available.
• Automatic low-battery indication on display.
• Push one button to read +2 V; push two
  buttons to read +20 V while taking reading.
• Digital readout: +1.999 V or +19.99 V.
• Filter eliminates errors caused by AC.
  Up to 50 volts, 50/60 Hz.
• Operating temperature: -4°F to 185°F.
• Molded PVC housing.
• Plastic carrying case with resilient padding
• Modular construction
• Weight: about 3 lbs.
• Size: 2 ˝" deep x 10" long.

Model DPM (Catalog No. 4110) includes the potential meter, RE-5 CuSO4 reference electrode, one 8' test lead with hippo clip, one 8' test lead with 27-C test clip, battery, protective cover for meter, and carrying case. Shipped assembled in case.

Warranty: Any part which fails during first six months (except battery), even if caused by overloading, will be repaired or replaced by MC Miller Co. without charge, when returned to MC Miller Co. prepaid and insured.