Tuning slide

Tuning slide 1. (Fr.: coulisse d'accord; Ger.: Stimmzug), on brass instrs. a connecting slide invented by J. G. Haltenhoff of Hanau by 1776, graduated for tuning purposes; 2. the tenon and socket of a flute head-joint made long enough to be pulled out for tuning purposes. It was originally devised to obviate the need for an extra corps de rechange. J. J. Quantz claimed the invention for himself; 3. small metal tube fitted on top of a metal flue organ pipe (from 4′ C up) for tuning purposes…