Longines 'Ultraquartz Cybernetic' quartz analogue wristwatch, 1969-70.

Made:
1969-1970 in Saint-Imier and Switzerland

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Ultraquartz Cybernetic' quartz analogue wristwatch by Longines, Switzerland, c.1969. With seconds hand and date
Science Museum Group
© The Board of Trustees of the Science Museum

Ultraquartz "Cybernetic" quartz analogue wristwatch by Longines, Switzerland, c.1969. With seconds hand and date indicator. An example of the first quartz wristwatch of European origin. Case back marked '16' and '228794'.

An ultraquartz "Cybernetic" quartz analogue wristwatch by Longines, Switzerland, c. 1969, with seconds hand and date indicator. An example of the first quartz wristwatch of European origin. Case back marked '16' and '228794'.

The frequency of the quartz crystal is not divided down electronically but is used to control and correct the vibrations of an arm by means of a cybernetic circuit. The arm vibrates at 170 cycles per second and drives the hands through a pawl and ratchet mechanism. Discrete components are used instead of integrated circuits.

Details

Category:
Time Measurement
Object Number:
1976-515
Materials:
leather, stainless steel
Measurements:
overall (as displayed): 91 mm x 40 mm x 65 mm,
type:
wristwatch
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • timepiece
  • watch
credit:
Longines of St. Imier
status:
Permanent collection

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