>> Take a tuning pin or some other measurable item. Have 5 people measure it five times, with the *same* tools (a digital readout vernier calipers for example). I think you will be amazed at the difference from one set of measurements to the next. << List, Coming from a engineering background, just wanted to point out something that may be of minute value to somebody. Speaking pre digital readouts, a vernier caliper is/was not a highly accurate tool for precision measurement. As a tool it is fast and convenient, but lacks precision. For consistency and precision, a micrometer is the correct tool for accurately measuring to thousands of an inch. I am sure somebody will correct me if the world of didital readouts has changed all this. Regards, John Email: Woodroj@syvax.email.dupont.com Telephone: 61-2-99236103 Fax: 61-2-99236099
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