2.8X Watchmaker Loupe Biconvex Air 3 x 1/2

We turn this body with a plain profile that sits directly into the eye socket. An extra opening lets air move through the body while you examine an escapement or adjust a balance. Catalogue 2611-TN holds a biconvex lens under a threaded bezel.

Biconvex glass

The lens curves on both faces to bring fine work into focus without requiring you to crowd the movement holder. The field stays clear across the center of your bench view.

Ventilation port

We pierce the side of the cup with an air hole. Heat escapes through the wall so the inner surface of the glass stays dry through long assembly tasks.

Threaded bezel ring

The glass is retained by a screw cap rather than a pressed fit. You unscrew the front ring to wipe both faces clean with tissue or fit a fresh lens when needed.

Body profile

The plain cup rests against the brow without heavy spring tension. It stays seated while your hands remain occupied with tweezers and a screwdriver over the movement.