magnifying

n medical instrument consisting of a magnifying lens and light

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

which measurement, compared with the actual diameter of the glass, gives the magnifying power.

An optical instrument for magnifying engravings, photographs, etc., usually having one large lens and two smaller ones.

small magnifying glass (usually set in an eyepiece) used by jewelers and horologists