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The answer is baritone horn.
Brass instruments produce sound by the vibrating of the player's embouchure in a mouthpiece, and the valves and slides on the instrument alter the length of the tubing in the instrument which affects the pitch of the notes produced. The farther the air has to travel in the instrument the lower the pitch of the sound is, whereas the less distance the air has to travel the higher the pitch the instrument will produce.
The smallest length known today is 2.3cm
the smallest form of measurement is a nanometer
The instrument "Metalic tap" is generally used for length measurement in India
The smallest unit of measured length marked on a 300mm rule is 1mm.
The smallest unit of length shown. There are 1000 of these in one meter.
There are many units which are used to measure the lengths of the object . The smallest unit of length is fero meter.
The size of the tubing gradually increases throughout the length of the instrument.
A nanometer is a small length, and one nm would be the smallest integer length. But picometers and smaller sub-multiples. (femto-, atto-, etc) are even smaller in length.
The American kestrel, at eleven inches in length. This is the smallest falcon.
A trombone is a brass instrument, therefore its sound is produced by you blowing air through your mouth and vibrating your lips. the octave is changed by how fast or slow you vibrate your lips.