CM must assure that all necessary parties agree to and are aware of the assignment of such serial number blocks.Īn alternate method is to have each plant prefix the serial with a letter assigned by CM.
At this point, the blocks of serials used by each plant must be controlled in order to avoid duplication. Manufacturing normally assigns the serial numbers to each product.Īs companies grow, they may decide to build products in the same family in more than one plant. They are usually assigned in sequence per product or product family. The serial number is sometimes used only for warranty control and sometimes used for both warranty control and for version control. Watts, in Engineering Documentation Control Handbook, 2012 Serial NumbersĪ serial number (SN) is a number assigned to each individual product in order to distinguish that product from all others. The tuning pitch is often one-half or whole−tone too low.Frank B. Tonal as well as in terms of technical requirements (repetition, precision of the regulation) these instruments do not meet present standards. In this cases, the focus does not lie on the current value but on a sentimental value. Exceptions are a special age (historical value) or antiquarianism (special inheritances). In most instances, service or repair works do not make any sense with those grand pianos. For this reason, these grand pianos should not be used for beginners and piano students.
Such musical instruments are not suitable for a serious piano education. That means, instruments containing a Viennese−style action are older than 90 years by now. Why should you refrain from instruments with a Viennese−style action? The last instruments constructed like this were built in Austria around 1920. You can see a picture of the cross−section of a Viennese−style action under the menu item “Technical Information”. The arrows show you the damping and the fulcrum of the hammer handles which mark this difference. The pictures above show how you can detect a Viennese-action. This old grand piano often works with a Viennese−style action. Continually old instruments show at antiques dealers or inheritances.
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