n medical instrument consisting of a magnifying lens and light
2
An instrument for determining the magnifying power of telescopes, consisting usually of a doubleimage micrometer applied to the eye end of a telescope for measuring accurately the diameter of the image of the object glass there formed
3
which measurement, compared with the actual diameter of the glass, gives the magnifying power.
4
An optical instrument for magnifying engravings, photographs, etc., usually having one large lens and two smaller ones.
5
small magnifying glass (usually set in an eyepiece) used by jewelers and horologists
