I bought this tool to keep in a sewing box by my chair. I have already used it to measure the diameter of some dowels and some beads. My husband has a more accurate digital caliper that I use when I need accuracy, but for most of my needlework I just don't need that level of accuracy. I find it interesting that the outer plastic bag said it was made in China, while the caliper itself had "Hunter" and "Made in Germany" stamped into the metal. I don't know what is actually correct, but for my purposes it probably doesn't matter.