Or this, even cheaper and finds voltage as well
http://www.aliexpress.com/item/Digital-Stud-Metal-Finder-Voltage-Scanner-De=
tector-Wall-7211-01-01/792791369.html


On Wed, May 15, 2013 at 9:33 AM, humberto echeverria <
humbert_echeverria@yahoo.com> wrote:

> Hi:
>  Maybe you could use one of this:
>
> http://www.aliexpress.com/item/free-shipping-Underground-metal-detector-p=
ortable-metal-detector-GP-008/424492431.html  $30  free shipping
>
> regards
> Humberto
>
> ________________________________
>  De: Manu Abraham <abraham.manu@gmail.com>
> Para: Microcontroller discussion list - Public. <piclist@mit.edu>
> Enviado: Martes, 14 de mayo, 2013 11:11 P.M.
> Asunto: Re: [EE] underground pipe/wire finder
>
>
> Hi Bob,
>
> On Wed, May 15, 2013 at 10:27 AM, Bob Blick <bobblick@ftml.net> wrote:
> > When the power company wants to follow the path of a buried cable, they
> > attach a gadget to one end and walk along the ground with another
> > gadget. Looks real easy when you have that $7000 pair of gadgets.
> >
> > Any idea what inexpensive thing I could modify to get a similar effect?
> > I don't need to do it on a live wire, and the maximum depth underground
> > is one meter or less.
>
> I used to trace my satellite coax cables, telephone cables and ethernet
> cable installation at my office with a Tone tester. It wasn't that
> expensive
> as you mention. I have 2 such devices, one of them has a better
> sensitivity.
> Nevertheless, it looks somewhat similar:
>
>
> https://www.theelectricaltoolstore.com/tenma-tone-generator-probe-set-cab=
le-locator-p-204.html?zenid=3Dvnt2t68vdjtffs7u3r9abdvgq4
>
> Regards,
> Manu
> --
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