Harbor Freight has a dial indicator on sale for $9.99. You can use this with shop made jigs for tuning up your table saw, setting jointer/planer knives. They are also necessary when checking run out on your lathe or drill press.

http://www.harborfreight.com/1-inch-...campaign=2310A

http://familywoodworking.org/forums/...ad.php?t=14105

Cheers,