All PREFAG movements have been used
for decades in most critical physical environments like:
Civil and commercial jets
Commercial/military supersonic flight equipment
Ship applications (vibration and shock)
Railroad (repetitive bumps)
Textile machinery (extremely high vibration)
For these high-end applications all our movements are equipped with:
Spring-backed sapphire jewels
Top quality tungsten carbide pivots
For non-vibration sensitive pointers
Copper coil formers for high damping are available
Mechanical self-centering pivot holding system, for best alignment and avoidance of adhesion
PREFAG zero adjustment for a play-free self-locking jewel screw positioning without counter nut or adding adhesive.
PREFAG welded hair springs for controlled torque and secure hairspring position, to avoid the overheating of the springs and a changed hysteresis.