loupe

plural loupes

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

   Pemulis owns stuff like philatelic forceps, a loupe, a pharmaceutical scale, a postal scale, a personal-size Bunsen burner […]

   1996, David Foster Wallace, Infinite Jest […], Boston, Mass.; New York, N.Y.: Little, Brown and Company, →ISBN, page 213

   2 more examples

   pale gnomes, patient as lock-pickers, squinted through loupes, adjusting tremblers and timers with tiny screwdrivers and forceps.

   2006, Thomas Pynchon, “Iceland Spar”, in Against the Day, New York, N.Y.: Penguin Press, →ISBN, page 235

   The watchmaker himself, a white-haired éminence grise, was bent over his work, a jeweler’s loupe in his eye, when I walked in.

   2026 April 24, Robert Klose, “Fix my watch, tell me a story”, in The Christian Science Monitor, Boston, Massachusetts: Christian Science Publishing Society, →ISSN, →OCLC

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

plural Loupes

1. A surname.