[Boatanchors] Updated FS

[Norman Hairston]

Ray:

I did not read the responses to your ad. I had a lot of experience with 
Wheatstone Bridges back in 1952/1953. In that era Long Distance 
Telephone Companies still had a lot of their circuits and carriers on 
open wire facilities. As you can imagine, open wire facilities were 
prone to all types of failures. Pairs of wires going crossed and pairs 
going open. Wheatstone Bridges were a tool of considerable resistance 
accuracy. They were used to locate open wire faults. The most simple was 
to measure, in ohms, the resistance to the cross. They knew the 
resistance in ohms per pole, then a record what pole number would equate 
to the fault. Locating "Open" pairs was more difficult. A feature of the 
wheatstone Bridge to locate open pairs was a Varley. Varley feature 
could be used also to locate "Side Crosses" between pairs. Wheatstone 
Bridges were large, accurate Ohm Meters. There were some uses in 
industry but I am not familiar with those.

Today, I would say that wheatstone Bridges are absolutely worthless 
except an antique or a Boatanchor.
One last chance may be one the telephone companies museum.
Sorry to deliver such dark response.

Harold/Norman