instruments

1.

a tool or implement, especially one for delicate or scientific work.

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a surgical instrument
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implementtoolutensildeviceapparatuscontrivancegadgetcontraptionappliancemechanismgizmo
2.

a measuring device used to gauge the level, position, speed, etc. of something, especially a motor vehicle or aircraft.

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a new instrument for measuring ozone levels
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gaugemetermeasureindicatordialdisplay
1.

equip (something) with measuring instruments.

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engineers have instrumented rockets to study the upper atmosphere
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instrumentalinstrumentstatutory instrumentmusical instrumentstringed instrumentreed instrument