ANTIQUE MEDICAL INSTRUMENTS/ TELESCOPES/ BINOCULARS/ OPERA GLASSES/ NAUTICAL ITEMS/ CAMERA/ COMPASS

in·stru·ment ĭn′strə-mənt noun

A tool/instrument is any physical item that can be used to achieve a goal, especially if the item is not consumed in the process.

Tools use by humans dates back millions of years, and other animals are also known to employ simple tools. Tools that are used in particular fields or activities may have different designations such as “instrument”, “utensil”, “implement”, “machine”, “device,” or “apparatus”. The set of tools needed to achieve a goal is “equipment”. The knowledge of constructing, obtaining and using tools is technology.