Suunto (English Wikipedia)

The Compass Museum, Article Archived 2008-12-21 at the Wayback Machine: Though the Creagh-Osborne was offered in a wrist-mount model, it proved too heavy and bulky in this form.

copybook.com

Vorpe, Gilbert on behalf of Recta AG, Swiss Patent CH 663091, EC: G01C17/04, November 13, 1987

Weinland, Don; Massoudi, Arash; Hancock, Tom (6 December 2018). "China's Anta Sports closes in on €5.6bn takeover of Finland's Amer". Financial Times. Retrieved 29 May 2020.

"Change in Amer Sports Corporation's financial reporting schedule" (Stock exchange release). GlobeNewswire (Press release). 22 July 2019. Retrieved 29 May 2020.

Recta: More Than 100 Years of Heritage, Recta AG - About Us, retrieved 13 April 2012

E.S. Ritchie & Sons Company, Inc. About Us, Article Archived 2008-10-11 at the Wayback Machine: In 1860, Edward Samuel Ritchie, an American physicist and instrument maker, received a U.S. patent for the first liquid-damped marine compass adopted for general use aboard ships and boats.

Suunto Oy, Suunto Company History, December 2001 Article Archived 2008-02-16 at the Wayback Machine
E.S. Ritchie & Sons Company, Inc. About Us, Article Archived 2008-10-11 at the Wayback Machine: In 1860, Edward Samuel Ritchie, an American physicist and instrument maker, received a U.S. patent for the first liquid-damped marine compass adopted for general use aboard ships and boats.
The Compass Museum, Article Archived 2008-12-21 at the Wayback Machine: Though the Creagh-Osborne was offered in a wrist-mount model, it proved too heavy and bulky in this form.
"Suunto Turns 70 Years - Suunto - Military Suppliers - Copybook". Archived from the original on 2015-06-23. Retrieved 2015-04-23.
(Press Release) http://www.amersports.com/newsroom/news/news-article/2015/05/04/amer-sports-strengthens-its-digital-connectivity-services-and-capabilities-through-acquisition-of-sports-tracker- Archived 2015-05-05 at the Wayback Machine