Black single magnifying glass (no handle) sometimes called a "loupe". Magnification can be adjusted by turning the small end. Mid distance manifying only.magnifer, loupe, monocular

A stand magnifier or loupe is a small magnification device used to see small details more closely. Unlike a magnifying glass the loupe doesn't have a handle but stands on the page to enlarge text or images. The lens is cylindrical and protected by casing. They are often used by jewellers and are held close to the eye. Clear plastic tube with magnifier at one end and attached to a red cordassistive devices, ecshenbach

Boxedmagnifying, glasses, berger loupe