First the dictionary meaning of these two words:
Device: A thing made for a particular purpose; an invention or contrivance, especially a mechanical or electrical one
Instrument: a mechanical tool or implement, especially one used for delicate or precision work
Device is something that is a hardware and capable of doing or supporting some sort of task.
And Instrument is something that is also a hardware but designed to do a specific task.
instrument means something from which specific result can be obtained independently.
device is something from which result can be obtained only with human effort.
There is far difference between game and instrument. We play game to overcome the challenges but we play instrument for the enjoyment.
The difference between a tuned instrument and an untuned is that a tuned instrument can play a tune, whilst an untuned instrument can only play a rhythm.
A scriber is something that is a part of some instrument used for marking. A marking gauge is a device especially used for marking.
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the difference is that a tuned percussion instrument gives is a nice vibrant sound when on the other hand an percussion instrument that's not tuned either gives it a flat papery sound or just an annoying echo
otiability and transferability?
Such a device is known as a protractor.
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An Instrument is a device or devices used to carry out a measurement (from the International Society for Pharmaceutical Engineers ISPE). An Equipment is a discrete non-consumable item either operating stand-alone or combining several instruments or pieces of equipment. An instrument is also a piece of equipment.
Calibration is a comparison between measurements - one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device. The device with the known or assigned correctness is called the standard. The second device is the unit under test, test instrument, or any of several other names for the device being calibrated. This definition source : Wikipedia.
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