Megger DET2/3 High Resolution Earth Tester 

Model DET2/3 with ETK50C
 
High resolution of 1 m?, ideal for large earth (ground) systems
Versatile tests modes
High accuracy for earth (ground) electrode grid and soil resistivity tests
Rechargeable battery power that can last all day with a fast re-charge (up to 10 hours)
Robust instrument with IP65 protection
Automatic test frequency selection, with filters and high current features
Diagnostic trace display
Data storage
Large colour display that shows numeric and graphical results
 
Portable power
 
An internal Li-ion battery provides for a full day of tests.
The Li-ion battery has a fast recharge facility that allows a flat battery to provide an afternoon of tests, if charged during a lunch break.
The DET2/3 can also operate from a standard 12 V DC battery supply
 
Weatherproof and rugged
 
The DET2/3 is sealed to IP54 standard, which provides weatherproofing during operation (case lid open). When the case lid is closed its protection standard is to IP65 (water and dust damage).
The case is made of a tough and light copolymer polypropylene, which can withstand the rough and tumble of outdoor use
 
Model DET2/3 with ETK50C