The word you're looking for is... Abacus.
Microscope Magnifying Glass
the instrument that starts with a e is euphonium thank you i hope you use this
you can use a hygrometer. which is an instrument used for measuring humidity.
metronome
A measuring instrument that starts with micro is a micrometer.
The whistle is a musical instrument. The washboard is a musical instrument.
The most common is the barometer, which measures atmospheric air pressure.
Saxophone
· Yazheng (a Chinese string instrument)
marimba. its a percussion instrument
A Quena, A South American fold instrument- wind instrument
There is no instrument that starts with the letter Q but if someone makes up a new instrument and name it Quadicall or something else.