An article on how to make a simple earth resistivity meter appeared in Everyday Practical Electronics Jan & Feb 1997. The author is Robert Beck.
I would be interested in hearing from anybody who has used a meter made from these published specifications.
I know that there are many alternative solutions to, and within, earth resistivity surveying and that Robert Beck published a more advanced design in EPE March & April 2003.
However it is the 1997 design that I want information about.
Also - does anybody know how to contact Robert Beck?
Richard Wright