NaBo 56 / 8

The cockpit navigation chronograph.

Special characteristics
  • Meets EASA Form 1 requirements and the military test specification MIL-C-38207A
  • Mechanical 8-day movement by Revue Thommen
  • Functionally reliable from –35 °C up to +55°C
  • Especially resistant to vibration and shock
  • Minute ring can be rotated in both directions
  • Numbers and counters coated with fluorescent colour and with persistent luminescent colour
  • Crystal with an anti-reflective coating on both sides
  • Low pressure resistant at high flight altitudes


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