Need help. I'm drawing a blank...

[blacktailer]

Need to get my brother-in-law a tool that you use for aligning the rings on a rifle scope.  I was thinking it was called a lapping tool.  Do they make one in the $50.00 dollar range, and what in the heck are they called?  Thanks, BT

[Lingcod]

Yep, lapping kit. Amazon has some bare bones ones for $45

[b23]

Does he need it for 1in tube or 30mm tube or both???  www.midwayusa.com will have everything you're looking for.  Wish my brother inlaw got me cool stuff like that for Xmas.