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This is an accepted version of this page This is the latest accepted revision, reviewed on 15 February 2024. Finnish manufacturer of compasses, dive computers and sports watches Suunto Oy Suunto's headquarters and production facilities in Vantaa, Finland Company type Subsidiary Industry Measuring instruments Founded 1936 ; 89 years ago (1936) Founder Tuomas Vohlonen Headquarters Vantaa ...
The most significant article for Physica was a compass, competing the market with Suunto Oy. [7] Physica sued Vohlonen, because, according to them, the supplements described a totally different product, the original application didn’t mention anything about a manufacturing method and, in addition, the method was elsewhere used long before the ...
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.
A Brunton compass, properly known as the Brunton Pocket Transit, is a precision compass made by Brunton, Inc. of Riverton, Wyoming. The instrument was patented in 1894 by Canadian-born geologist David W. Brunton. [1] Unlike most modern compasses, the Brunton Pocket Transit utilizes magnetic induction damping rather than fluid to damp needle ...
Ritchie thought they could be improved upon, and by 1860 had received a U.S. patent for the first successful and practicable liquid-filled marine compass suitable for general use, [10] [11] a development that has been described as the first major advance in compass technology in several hundred years. [12]
Compass surveying is a type of surveying in which the directions of surveying lines are determined with a magnetic compass, and the length of the surveying lines are measured with a tape or chain or laser range finder. [2] The compass is generally used to run a traverse line. The compass calculates bearings of lines with respect to magnetic needle.
Galileo's geometrical and military compass, thought to have been made c. 1604 by Mazzoleni Figure showing the scales of Galileo's military compass, from his manual on the device. Galileo first developed his sector in the early 1590s as a tool for artillerymen. By 1597 it had evolved into an instrument that had much broader utility.
The azimuth compass still had great value in letting the master of a ship determine how far the magnetic compass varied from true north, so he could set a more accurate course while following a line of constant latitude or using dead reckoning to navigate. In 1795 a British First Rate ship would have up to eight compasses, of which one was an ...