loupe

A small magnifying glass used chiefly by watchmakers and jewelers.

A lens or magnifying-glass.

A mass of pasty iron mingled with slag as taken from the Catalan forge when ready to be shingled.

Any of a variety of small magnifying glasses, having a magnifying power from 2X to 20X, commonly of 10X, which may be held in the hand, or in some cases held within the eyesocket without the use of a hand. It is commonly used by jewelers and watchmakers.

A magnifying glass, usually mounted in an eyepiece, often used by jewellers and watchmakers.

A type of short-range binoculars used by surgeons and dentists.

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