Not exactly. You'll normally find a "voltmeter" somewhere on the bench or in the toolbox.
You may be thinking of the "altimeter" in the basket of the hot-air balloon.
voltimeter
Yes there is its called "your finger".
Pin 1 is +5V, pin 2 is Ground and pin 3 is the signal. Use analog voltimeter in pin 2 and 3. Crank the engine: the pointer of the voltimeter shoud oscilate in range 0V to 5V.
That instrument is called a Metronome.
a musical instrument? a wind instrument? a string instrument? a percussion instrument?
The instrument is often called a squeeze box is an accordion. The term squeeze box is a colloquial expression referring to any musical instrument of the general class of hand held bellows driven free reed aerophones such as the accordion and the concertina.
The first chair of the first violin section is called the concertmaster or concertmistress. They are considered to be the leader of the orchestra. The conductor can play any instrument.
It is a traditional instrument that is called a shamisenor samisen
Whip is a percussion instrument. It is also called a slapstick.
It was an medieval instrument called a "sacbut". It means "push-pull"
instrument called zither?
Although it is no longer played so much any more, the heckelphone can be called a tenor oboe.