The dawn of astronomy; a study of the temple-worship and mythology of the ancient Egyptians (1894)
Lockyer, Joseph Norman,Sir,1836-1920 · London, Cassell · leaf 88
t, F 2 68 THE DAWN OF ASTRONOMY. [Chap. VII. it consists of a magnetic needle fastened to a card carryinga circle divided into 360°, which can be conveniently readby a prism Avhen the instrument is turned toward any definitedirection marked by a vertical wire. Its use depends upon thefact that at… … THEODOLITE FOE DETEEMINING AZIMUTH AND Af/riTUDES. A theodolite armed with a delicately hung magnetic needle^which can be rotated on a vertical axis, will do still better ;it has first of all to be levelled. There is a little telescopewith which we can see along the line. When we wish, forinstance,…
Astronomy, Egyptian · Temples · Sun worship
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