Hi, All!
       I am looking for a pair of calipers to measure various of my scallop shells.  There are a lot of calipers for sale on eBay.  I know I don't need the accuracy of a vernier calipers, but I don't know what to look for;  but I also know they don't have to be huge.  Can someone help me?

                        Thanks, Linda

       Above should read "various parts,"  such as height, width, depth or  "fatness," and in metric, of course.