The 3620 features 3 terminal operation for fall of potential earth and ground resistance, and can be used for 2-Point tests as well. The large 3.1 inch logarithmic scale is very easy to read, and has a separate marking for 25 Ohms. A manual zero adjust is provided for accurate readings, and color coded terminals are easy to use with banana plug inputs and binding posts.
3620 Features
The 3620 is the perfect instrument for power utilities, electrical contractors, telephone and CATV technicians, REAs, and inspectors who need to check ground to determine compliance with OSHA, NEC, and other specifications.