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2. Silva compass - Wikipedia

   en.wikipedia.org/wiki/Silva_compass

   Silva Sweden AB is an outdoors products company that sells handheld compasses and other navigational equipment including GPS tools, mapping software, aircraft altimeters, and marine navigation tools. Silva's founders - Gunnar Tillander, Alvar Kjellström, Arvid Kjellström, and Björn Kjellström - invented the hugely popular orienteering ...

3. Hand compass - Wikipedia

   en.wikipedia.org/wiki/Hand_compass

   Floating-card compass with prismatic sight (bearing 220° through eyepiece). The marine hand compass, or hand bearing compass|hand-bearing compass as it is termed in nautical use, has been used by small-boat or inshore sailors since at least the 1920s to keep a running course or to record precise bearings to landmarks on shore in order to determine position via the resection technique.

4. Kamal (navigation) - Wikipedia

   en.wikipedia.org/wiki/Kamal_(navigation)

   A simple wooden kamal. A kamal, often called simply khashaba (wood in Arabic), [1] is a celestial navigation device that determines latitude.The invention of the kamal allowed for the earliest known latitude sailing, [2] and was thus the earliest step towards the use of quantitative methods in navigation. [3]

5. Navigational instrument - Wikipedia

   en.wikipedia.org/wiki/Navigational_instrument

   Bearing compass used to determine magnetic bearings of landmarks, other ships or celestial bodies. Magnetic compass used to determine the magnetic heading of the ship.

6. Pelorus (instrument) - Wikipedia

   en.wikipedia.org/wiki/Pelorus_(instrument)

   Pelorus aboard HMS Belfast. In marine navigation, a pelorus is a reference tool for maintaining bearing of a vessel at sea. It is a "simplified compass" without a directive element, suitably mounted and provided with vanes to permit observation of relative bearings.

7. Bearing compass - Wikipedia

   en.wikipedia.org/wiki/Bearing_compass

   A bearing compass, is a nautical instrument used to determine the bearing of observed objects. (Bearing: angle formed by the north and the visual to a certain object in the sea or ashore). (Bearing: angle formed by the north and the visual to a certain object in the sea or ashore).