Vintage Meylan Mechanical Stopwatch No. 2040, co-branded by Bausch & Lomb Inc., Swiss-made precision timer with aluminum case and white dial. Includes the original Meylan instruction card. Hands and dial are intact, but the winding crown is missing, so it is being sold as-is for parts, repair, or display. Serial plate on back reads "C09699 – Built Up to Quality." A fine collectible for restoration or display in a vintage lab or sports timing collection.