solar compass

His solar compass invention had much better accuracy in these type of areas.

With his mechanical abilities, he then devised and built the solar compass.

While Burt invented the typographer, he is better known for his solar compass.

From the middle of the 19th century until late in the 20th century, the solar compass was widely employed for surveying land.

He applied his findings and experiments of this return trip to his Solar Compass with the idea to help navigation.

The solar compass, an astronomical instrument, was first invented and made by William Austin Burt.

The western extension did not have the same quirks as the first survey since the solar compass had made it easier to make accurate east-west surveys.

The General Land Office adopted the solar compass as a standard instrument for all major boundary lines, especially in regions of magnetic disturbance.

John S. Hougham, professor, President of the Board, abolitionist, developer of the solar compass.

The Calumet and Hecla Mine, largest copper mine in the world, was discovered through the use of Burt's solar compass.

Using the location of the sun, or occasionally the moon, with astronomical tables, the solar compass enabled surveyors to run more accurate lines, saving its user valuable time.

These instruments included an alidade, dumpy level, theodolite, Gunter's chain (which was replaced by a steel tape) and a solar compass or a vernier compass.

Since there was no patent on Burt's solar compass after 1850, instrument makers sold "Burt's solar compass" to surveyors.

The meridian and baseline were surveyed using solar compasses by James E. Freeman of Wisconsin and William Ives of Michigan.

But there is nothing high-tech about it, the researchers say, as the birds apparently rely only on a solar compass, using the position of the sun and their innate sense of time to guide them.

Burt devised the solar compass so that garbled readings caused by the Earth's magnetic field would be cleared up and so that north-south survey lines could be easier to find.

Its close relative, a solar compass attachment to a surveyor's transit, was still a recommended method of obtaining direction in the 1973 manual of the US Bureau of Land Management.

In 1835, the solar compass was invented by William Austin Burt, a U.S. Deputy Surveyor who began surveying government lands in the Michigan Territory earlier in 1833.

Burt also invented the first workable solar compass, a solar use surveying instrument, and the equatorial sextant, a precision navigational aid to determine with one observation the location of a ship at sea.

The land commissioner committee, who was senators from Michigan and other states, recognizing the value of Burt's solar compass in public land surveys, persuaded him to forego renewal and petition congress for suitable advance compensation.

Burt continued to survey Michigan's Upper Peninsula, however using his solar compass because the normal magnetic compass would not furnish accurate readings because of the large deposits of minerals in the area.

His solar compass and adaptations of it became standard instruments for the government land survey in much of the western United States and were used until the Global Positioning System was available in the late 20th century.

Burt's solar compass is a precision instrument made of brass with a solar attachment that allows surveyors to determine the true north direction by reference to the sun rather than by reference to the magnetic north pole.

The United States government required land surveys to be done by Burt's Solar compass; as in many cases the cost to accurately survey lands with heavy mineral deposits that interfered with normal instrumentation would have exceeded the value of the land.

In the case of the Monarch butterfly, it has been shown that antennae are necessary for proper time-compensated solar compass orientation during migration, that antennal clocks exist in monarchs, and that they are likely to provide the primary timing mechanism for Sun compass orientation.