At LIP we use three families of TMI self-winding mechanical calibers:
The mechanical self-winding caliber in the NH05 series has the distinctive feature of being very small in diameter. It measures just 17.5 mm and is only 5.92 mm thick. Its balance-spring regulating group oscillates at 3 Hertz, or 21,600 vibrations per hour. It displays the time with a central second hand and the date in a window.
The mechanical self-winding calibers in the NH7 series measure 27 mm in diameter. Their balance-spring regulating group oscillates at 3 Hertz, or 21,600 vibrations per hour. To ensure that the time is set more precisely, they are equipped with a stop second operated by pulling the winding stem to adjust the hands.
The NE86 self-winding mechanical chronograph caliber is equipped with a column wheel and a vertical clutch guaranteeing precise and rapid engagement of the timekeeping functions with an unrivalled quality of perception under the finger. The mechanism also enables the chronograph hands to return instantaneously once the pusher at 4 o'clock has been pressed. With its balance-spring regulating group oscillating at 4 Hertz, this instrument for measuring short times is capable of timing to 1/25th of a second. The barrel spring made of ‘Spron©’ (a patented specificity of some of TMI's top-of-the-range movements) provides a power reserve of 45 hours under full load.