Here’s how you can distinguish between a real Rolex and a fake. The Cyclops Lens: A genuine Rolex features a convex lens above the date window, magnifying it by 2.5 times. Ensure the lens is ...

This was done by hand, but in this instance there’s no shame in using a real buffing wheel. Several other lenses are demonstrated, including a cylindrical convex lens, but these are only ...

In his workshop in Padua, Italy, he discovered that plano-convex and plano-concave lenses worked best—that is, lenses with a plane on one side and curved surfaces on the other. Then, drawing on ...