Detuner

Detuners or `Xtenders` (Hipshot`s brand name) are mechanical devices used to simplify the tuning of a stringed instrument during performance. This allows musicians to quickly and accurately reach notes outside the normal range of their instruments. These devices are also known by other names including `drop head` and `hipshot`. They can be ...
Found on http://en.wikipedia.org/wiki/Detuner

Detuner

[engine] Detuner is a generic term for a jet engine test cell exhaust system muffler. Aircraft jet engine testing facilities typically require a means to vent and dampen the engine exhaust. The engine exhaust flow is `augmented` with a relatively large flow of cooling air induced by a Venturi effect into the exhaust silencing system, so the...
Found on http://en.wikipedia.org/wiki/Detuner_(engine)
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