• True 4 wire measurement eliminates lead resistance
• 10 Amp measuring current
• Rechargeable batteries with built-in charger
• Measuring range 600 micro-ohm......60 ohm
• Resolution 0.1 micro ohm on 600 micro ohm range
• 0.8" LED display daylight viewable
• Auto average of forward an reverse measurement
• Remote start socket
• All solid state design
• Wide range of leads and accessories available
• RS232 printer output

The DO7 digital microhmmeter is a practical instrument for low resistance measurement, ideal for utilties use in the workshop, field or test facilities. It is of rugged construction, contained in a sealed ABS plastic case with lid and carrying handle. 

The DO7 digital microhmmeter has many advanced features, including protection up to 415 volts rms at the measuring terminals, digital calibration and long scale length, 6000 count. Rechargeable batteries means real portability with more than 1 hour of continous operation on the lowest ranges (10A), and 20 hours on all others. The internal charger will boost charge to 90% of full charge, switching automatically to a trickle maintenance charge. Warning LEDs illuminate when an open circuit lead condition is detected.

A front panel socket provides a serial RS232 output for connection to an external printer or PC, and a socket is also provided for the connection of an external start switch, e.g. a foot switch. The DO7 is supplied ready for use with batteries, mains cord and test leads, no extras are normally necessary.