"Andy Burns" wrote in message
...
Paulk wrote:

Dave Liquorice wrote:
Was hopeing technology would have moved on a bit...

It has with the fancy ones that work with a smartphone

I'd worry about how "gimmicky" they are when they show an image
representing their interpretation of what they've detected within the wall
...

but they aren't cheap.

More profitable, rather than more better?

The youtube does show it working very well. Not cheap tho.