Measuring silverware accurately

An issue came up recently that reminds me of a few things that I should mention about old silverware. First of all, when I measure pieces I almost always turn them over on the ruler. This gives my old eyes a more accurate view of both ends of the piece. I use a steel ruler that belonged to someone who worked with precision instruments, for further accuracy. A less expensive ruler can be far less accurate. If you check the measurement on a wooden ruler or a tape measure, there may be quite a difference, as what you are using is most likely far less accurate.
I always use the word "about" in the sales description for this reason, among others. I usually try to measure to the nearest 1/4 inch; sometimes, but not often, I measure to the nearest 1/8 of an inch. If I am measuring a plate with a wavy or ruffled edge, I measure the diameter at the widest point. If you feel that you must have accuracy in size beyond that, I urge you, for the sanity of both of us, to shop elsewhere! :)
Many people do not realize that silverware is formed by many sets of dies. The dies wear out and are replaced after a certain number of runs. The new dies may not be exactly the same in size and detail. If a pattern has been produced over many years (1847 Rogers FIRST LOVE from 1937 is a good example), one may find all kinds of differences, depending on the year of production. Sterling silver pieces may decrease in weight as well. Teaspoons made in 1906 can be much more substantial than those produced in 1922. So the spoon you purchase from me may not be an absolutely exact match to those in your set. This is a fact of life, and not carelessness or an attempt to defraud. Be sure to ask questions before you buy, so that there are no surprises when you receive your purchase. Once more the caveat: NEVER bid on any auction or store item without reading all the auction text and looking at all of the pics. Bidding based only on the title and thumbnail is a recipe for a problem transaction, something that neither of us needs.