loupen.
/luːp/, U.S. /lup/ A small magnifier used by a watchmaker or jeweller.
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the world > physical sensation > sight and vision > optical instruments > magnification or magnifying instruments > [noun] > magnifying glass > types of
reading glass1668
megaloscopec1775
hand lens1839
watch-maker's glass1875
waling glass1880
loupe1909
texture-counter1909
1909 in Cent. Dict. Suppl.
1940 C. McCullers Heart is Lonely Hunter ii. ii. 123 He noted the distorted look of Kelly's right eye as it appeared through his watchmaker's loupe.
1949 H. C. Weston Sight, Light & Efficiency iv. 122 Simple spectacle loupes are generally made to give a magnification of 21/ 4 or 21/ 2.
1962 R. Webster Gems II. xxxiii. 598 It is now possible to discuss the various types of simple microscopes, such as the ordinary magnifiers with which jewellers are so familiar. These magnifiers, or loupes as they are sometimes called, must be considered with two points of view in mind.
1964 E. Bruton Finsbury Mob viii. 111 On an old kitchen table were a pair of jeweller's scales, a loupe,..various other bits of jewellers' paraphernalia, and a packet of detergent.
This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2022).
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n.1909