Measuring Spoons Set of 6

I was happy to discover that these measuring spoons have markings in milliliters; however, not so happy to discover that the markings are inaccurate. I nearly botched a serious project because of it. I couldn't figure out what I had done wrong until I thought to check the accuracy of the spoons using two different medical syringes. The tablespoon indicates that it holds 15 ml. For one thing, a tablespoon equals 14.7868 ml, not 15 ml. Not only is it inaccurate in its marking, but it only holds 13 ml -- 2 ml short of 15 ml (yes, this is significant -- 2 ml is greater than 1/4 teaspoon). I won't document the rest of the discrepancies, but all of the spoons are marked inaccurately and hold significantly less than indicated on the markings.As far as the measurements for the United States customary system, these are close, but not perfect. When compared with another set of spoons in my kitchen, these still hold slightly less. If you do buy them for measuring liquid ingredients for cooking, anticipate that you will need to fill your spoons to almost overflowing capacity (for example, if your recipe calls for 1/8 t of vanilla extract, your spoon will need to be filled with as much as it can hold before spilling over).Do not buy if you need to measure in milliliters.