For the price, this caliper is worth it. Easy to use, measures depth from the inside out. Metric and inches. Inches in fractions or decimals. Reads up to thousandths, but I've noticed some discrepancies. In short, if you want pure precision, spend your money and buy a high-end caliper. For everyday needs, where a few thousandths are not important, this device is great. Good for light work. The hard plastic body makes it a valuable tool. I just threw it in my toolbox and no longer regret not having the caliper with me.