Low cost Resistivity and the CIA

Kevan Fadden writes:

The CIA seriously started its quest for low cost resistivity in 1999 following a Congress in Sheffield. An undertaking was given that the whole scene would be investigated and a report back would be made with recommendations as to whether it would be possible to produce a low-cost meter, and if necessary, provide a guide through the pit falls.

After a somewhat shaky start, we were contacted by Bob Randall, an electronics engineer and amateur archaeologist. He convinced us that he could produce a kit at a price which most could afford, so we asked for members' support to develop and build a batch of 25. As trials continued, it soon became apparent that the quality of his design demanded that only someone well versed in electronics should assemble the instrument, so the kit idea was dropped in favour of a complete unit. Again, a quality frame was essential if we wished to obtain results comparable with commercial units on the market. A solution came through Charles Corner, also a member of the CIA, who produced one from stainless steel with the necessary insulation and ergonomics. Interested members were again consulted and with their support 25 units were produced at a very competitive price, they are now spread all over the country and excellent reports are coming in all the time.

The time has come for the CIA to stand back from the resistivity meter production and distribution. Bob Randall will continue with Charles Corners' assistance to supply machines. The CIA will still support the project with its name and have negotiated a 10% discount deal for existing members of the CIA with a four-year membership and those who join with a four-year undertaking.

For further information and price list please contact TR Systems Ltd., 14 Holmes Road, Glinton, Peterborough, PE6 7LZ, email: bob@trsystems.demon.co.uk.