Tinker & Rasor Model CPV-4 CP Voltmeter

The CPV-4 is a DC digital voltmeter with an input resistance of 20 meg ohm and two voltage ranges. The first range is zero to two volts and the second is zero to 20 volts. The CPV-4 includes one Copper-Copper Sulfate Half Cell Electrode of your choice 2A, 6A, 6B, 8A or 8B.  This is a great choice for all CP testers.

The Model CPV-4 CP Voltmeter has two ranges; /- 2v DC and /- 20v DC.
High input impedance for most CP applications.

Features:

• Hand Held Instrument
• LCD digit display
• 20 Meg Ohm Impedance
• Filter AC Interference
• Heavy Duty Coiled Leads with Clamps
• Works with T&R Reference Electrodes: 6A,6B, 8A, 8B
• Storage Case

Construction:

• Durable die-cast aluminum case
• Powder coated finish
• Integrated circuits