On 24 Feb, 16:34, wrote:
Are the cheap end versions any good ?

http://www.tooled-up.com/Product.asp...nley-Intellise...

Specifically I want to use them to detect studs behind plasterboard
(1930's house) so I can hang shelves, pics
etc.

Or should I invest in a couple of powerful magnets ?

Thx

Don't know abouit cheap ones ... but after a lot of Googling around I
bough a ZIRCON Triscanner PRO SL and it works exactly as it's
supposed to.
http://www.yorksurvey.co.uk/products...t/triscanr.htm

Cheap enough and does the job