Muehle Glashuette Watch Terrasport I Chronograph. Time flies with our Terrasport model, not only because it measures time like a classic pilots' watch but also because it takes us back in time to the very beginning of wristwatch production in the German town of Glashutte. This small town in the Ore Mountains has been synonymous with high quality time measuring instruments since as early as 1845. In the first century of watchmaking in Glashutte, however, luxurious pocket watches were the main instruments produced. It wasn't until the end of the 1930s that wristwatches became popular on a large scale in the form of precise and easy to read pilots' watches.