This direct reading tester measures from 10MΩ to 1999Ω, and is auto-ranging, so it automatically seeks out the optimum measurement range.
The AEMC 3640 Digital Ground Resistance Tester performs ground resistance measurement. Easy to use - simply connect the leads, press to measure, and read. The large LCD (nearly 3/4" high) also indicates low battery status, overrange, and lead reversals.
The 3640 comes with 3 color coded terminals to aid in easy hookup. Three LED indicators on the front panel continuously warn the user of measurement problems to ensure accurate and reliable tests.