Tuomas Vohlonen, Date of Birth, Place of Birth, Date of Death
TweetTuomas Vohlonen
Finnish inventor
Date of Birth: 
Place of Birth: Orimattila, Southern Finland Regional State Administrative Agency, Finland
About Tuomas Vohlonen
- Tuomas "Tommo" Vohlonen (24 September 1877 – 27 March 1939) was a Finnish inventor.
- A surveyor by trade, his patents cover a wide area of devices and activities including compasses, skis, surveying, engines and farming.
- He founded the company Suunto Oy which is still active producing compasses according to his patented method as well as dive computers, sport watches and heart-rate monitors. In April 1933, after experimentation with various designs, Vohlonen applied for a patent from the Finnish Patent and Registration Office for a compact liquid-filled field compass, in which the magnetic needle and damping fluid were completely sealed into a unitary fused celluloid capsule.
- Vohlonen was granted a patent on January 25, 1935.
- Together with his wife Elli and nephew Kauko he founded Suunto Oy in 1936.
- Vohlonen incorporated his new liquid-filled capsule into a lightweight wrist-mounted design, the Suunto M-311, suitable for use by soldiers, surveyors, hikers, and others navigating while afoot.
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