http://business.listings.ebay.com/In...istingItemList
There's the Ebay section to find a base set for a dial gage so you can check your crank correctly. Do yourself a favor and don't get a brand new made in china set for fifty cents. They don't work. Get yourself a quality set made a couple or few decades ago. I like nsk japan but there are some good US brands too. Starrett and Mitutoyo are the mainline brands today. An antique Brown and Sharp or NSK Japan set will be higher quality.