Tutima Bund Chronograph - photo courtesy of For example, rather than having a separate click interacting with the ratchet wheel, the yoke spring handled this duty in addition to its part in the time setting mechanism. This construction allowed for a very simple, if not old-fashioned, winding functionality. However, instead of being located between the rotor and base plate, as is the usual, the mechanism was moved in between the dial and base plate. Just like the caliber 1340, the 5100 utilized a cam-actuated chronograph mechanism. Putting aside the minor changes to the dial layout, where the Lemania 5100 really altered was in its construction. The total functionality package made for an ideal tool watch, so it’s no wonder why it was a popular choice amongst various militaries of the world. In addition to the caliber 1340 carryover, the 5100 added a day function, and made the 24-hour subdial stock, whereas only certain 1340s included it when watchmakers chose to do so. The central minutes counter is one of our favorite tool watch features, as it makes accurate reading of a chronograph quick and intuitive. Taking after its predecessor, the 5100 featured the chronograph seconds and minutes on the main dial, as well as a 12-hour counter at the 6:00 position, running seconds at 9:00, and a date function. However, what we’re most concerned about here is the 1340s evolution into the Lemania 5100 – the next step towards reducing costs.īefore getting into how the Lemania 5100 cut costs, let’s talk about functionality. The 7750 is still ubiquitous to this day, and the 1340 lived a good, long life into the mid-1980s (more or less reborn in the 1990s as the caliber 1350). In the early 1970s, Lemania and Valjoux released the caliber 13, respectively. One of the first steps towards achieving these goals was to consolidate the use of auto-chronos to select, mass-produced movements. Prior to the full-on impact of the quartz crisis, a major focus of the mechanical watch industry was the improvement of automatic chronographs, from both technical and financial standpoints. One of the most utilitarian, reliable, and functional movements to ever be placed in a watch case – the Lemania 5100 – is the latest entry into the Wound For Life Hall of Fame. This time around, it’s the heart of the watch that’s getting the spotlight. So far, watches have been getting all the attention of our Hall of Fame.
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