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First, let me say that its nice to see that both AP and VC tourbillons here have an overcoil hairspring, which encourages concentric breathing of the spring and gives better isochronism (i.e. the timing is constant regardless of of the varying power as the mainspring unwinds). Lower-end tourbillons

EDIT: I misread the question and thought the intention is to compare the column wheel with the cam chronograph. In that case, they do not really affect the hour recorder, as they mainly manipulate the mechanisms for the seconds and minute counter. But to directly answer your question, not too compli

One barrel powers the timekeeping train, just like any watch. But at the same time, there is an extra "escape wheel" of sorts, stacked on top of the regular escape wheel. This extra escape wheel regulates the power of a second geartrain (which powers the chronograph), through a six-pronged star whee

At this level of luxury (or honestly, any for that matter), I think there are some little details that deserve to be discussed or addressed, as a fruitful horological discussion. The biggest qualm I have is the tourbillon. To begin with, the tourbillon is an invention to solve problems in a pocket w

For clocks, the trick is to look for any shafts that are square. This is so that you can have a good "grip" on the shaft to turn it (i.e. transmit high torque), to wind the barrel. Also, within the same area you will notice gears are made of steel, not brass. Steel is a high strength material which

Perhaps due to its use in nature, as red usually symbolises danger (e.g. blood, venomous animals, etc.). Thus it stands out as a strong accent colour, especially contrasted with a plain-coloured dial. Regards, skyeriding

Before getting into it, let's revisit some theory first to better appreciate the subtleties of why the engraving differences arise. The 1st gen Lange Chrono uses a regulator to adjust the timekeeping (beat rate). Notice the swan-neck with its screw - it pins a long needle, which is the regulator lev