Dial and Hands:
Analogue indication with indexes and hands
Digital indication with figures - normally only in combination with
Illuminous Tritium paint on dial indexes and hands is usually indicated by the
the imprint T or T25 on the dial.
Day/Date indication can be available in different languages.
Complications are additional functions of a watch, e.g. timing
functions of a chronograph, these are usually indicated separately on sub dials.
Hands are available in numerous shapes, Baton, Dauphine, Breguet, lance,
skeleton, etc. How the second hand moves allows concluding the type of movement
behind the dial: A jumping second hand has a quartz movement behind, a sweeping
second hand a mechanical movement.
Crystals must be scratch and shock resistant. The harder and more scratch
resistant, the less flexible and shock resistant is a crystal. Hardness is
measured on the MOH´s scale in steps from 1-10 (Fingernails = 2, Steel = 5-6,
Diamond = 10). The classification is according to which material scratches
- Sapphire, artificially manufactured material, MOH 9 = next to diamond,
extremely scratch resistant.
- Mineral glass with hardened surface, MOH 6-7 = still harder than steel.
- Plastic/Acrylic glass = PMMA = Polymethylmethacrylat, MOH 3-4, less
scratch, but more shock resistant and scratches can be polished out with
special acrylic polishes. Also the right material for extremely domed crystals
continue reading: Water Resistance &