#technical instrument
- Apparatus — A technical system, mechanical, electronic, or optical assembly structurally designed to perform a specific operation or specialized function; in anatomy, it represents a group of organs working together to fulfill a major physiological function of the body (digestive system); in politics and administration, it designates the totality of officials and institutions ensuring the management of a state or organization.
- Sealer — Serving to plug or seal; an object, mechanical device, or specialized tool (such as a corker, capper, or industrial shutter) used for the airtight closure of containers, orifices, or pipes. As a masculine noun, it can also designate the worker or person whose specific task is to close, cover, or insulate pits, utility trenches, or structural openings in construction.