Stoll & Co., based in Dayton, Ohio, provides repair and service for Swiss timepieces and common brands of wrist and pocket watches. Established in 1982, the company employs more than 20 full-time technical and administrative personnel. It specializes in the repair and service of chronograph, tuning fork, and complicated mechanical watches. Its services also include resealing and pressure testing of diving and waterproof watches. The company s basic service includes the disassembly of movement, ultrasonic cleaning, reassembly of movement, oiling, testing, adjustment, and quality control testing. Its service also includes the polishing of plastic crystals, case and bracelet cleaning, and adjustment of clasp. Stoll & Co., is a factory authorized service center in the United States for Jean d Eve, Xemex, AeroWatch, and Revue Thommen.