Quote:



I just bought a new sonic checker for $220... I'm
not home yet to test it out
EDIT
this is what I bought but with the options

http://www.ebay.com/itm/TM8812-Digital-U...=item4d2e75554f



P ......how wide is the head on that probe ? ... I got one on eBay toooo .... but the probe width is tooo wide to read smaller OD chassis tubing or the ID of a cyl wall.