Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c8.19

c8.19

Lastly the second, for I had forgotten an instrument for taking the declension of the sun, etc., which consists of a circle of iron, covered with brass, an axis of the same materials, and an index with sights. This axis, which is a diameter of a circle, and consequently in the plane of it, moves on pivots fixed in the walls, which support it and is parallel to the axis of the earth. The divisions are very much inferior to those on the stone.