For what purpose do you need a monocular? when choosing, this multiplicity is important. This is a characteristic that shows how close the object is. For example, in a 6x15 monocle, objects appear 6 times closer than they actually are. It would seem that the higher the magnification of the monocle, the better. However, the greater the magnification of any optical device, the more difficult it is to operate. This fully applies to such a compact instrument as a monocle.