Belongs To Instrument Class

Connects a scientific instrument to the concept naming the class of instrument it belongs to, such as an optical instrument, a spectrometer, a particle detector, a measuring instrument, an imaging instrument or a general scientific instrument. The inverse reading, Instrument Class Includes, names the same link from the class toward each instrument grouped under it. This relation gives the instrument class already recorded as an enum fact on each instrument a durable entity identity; it does not replace that enum fact, which keeps classifying every instrument exactly as before.