Crutch and Terminator
leaving the left hand free. A short pillar is fastened into the under side of the tube near the C hole, and 
the other end of itVarious
Inventions is fitted with a small cross-piece of wood, which rests between the thumb and fore-finger of the left hand, thus supporting the whole weight of the flute. But this cramps the action of the
thumb. Capeller invented a moveable mouthpiece, which was highly praised by Carl Maria von Weber in 1811. This contrivance was placed on an oval plate fixed on the head-joint, and both it and the cork could be moved by a screw. Ward devised a somewhat similar patent tuning-head, which he called a Terminator and Indicator. The method of using it was as follows: "Place the ring at N opposite a number (on either side of the circle) corresponding to that which shows itself at the top of the slide at M. This moves the (cork) termination of the flute correspondingly." Notice the square mouth-hole.
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Fig. 14.—Böhm's Crutch
Inventions is fitted with a small cross-piece of wood, which rests between the thumb and fore-finger of the left hand, thus supporting the whole weight of the flute. But this cramps the action of the
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Fig. 15.—Ward's Terminator and Indicator.
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