To ensure that the famous "Swiss movement" of a watch runs smoothly, in addition to numerous precision components and gears, the precision mechanical masterpiece must ultimately be held together by screws. Their production requires a great deal of know-how, so it is no wonder that well-known Swiss watch manufacturers rely on micro-precision screws from their own country. One manufacturer of such screws is Aeschlimann AG Décolletages from Lüsslingen in the canton of Solothurn. For micromachining, the specialists led by trained micromechanic Mattia Knecht rely on the µ-Finish system from Paul Horn GmbH. Knecht receives technical advice on tooling issues from Dominik Läng, an engineer at Dihawag, Horn’s sales agent in Switzerland.