![[A machine for shewing the sidereal, the equal, and the solar Time.] Pl. VII.](jpegs/56853.jpg)
[A machine for shewing the sidereal, the equal, and the solar Time.] Pl. VII.
J. Ferguson inv. et delin. J. Mynde sc.
[London: James Ferguson, c.1756.]
Engraving. Sheet 210 x 330mm (8¼ x 13"). Trimmed into plate top and bottom, as issued, binding folds.
A diagram of a machine designed by Scottish astronomer (1710-76), to demonstrate the different ways of measuring a turn of the Earth around its axis. From Ferguson's own work, ''Astronomy Explained Upon Sir Isaac Newton's Principles''. The title given comes from the text explaining the diagram, which is available in full from Project Gutenburg, at https://www.gutenberg.org/files/60619/60619-h/60619-h.htm
[Ref: 56853] £65.00
[London: James Ferguson, c.1756.]
Engraving. Sheet 210 x 330mm (8¼ x 13"). Trimmed into plate top and bottom, as issued, binding folds.
A diagram of a machine designed by Scottish astronomer (1710-76), to demonstrate the different ways of measuring a turn of the Earth around its axis. From Ferguson's own work, ''Astronomy Explained Upon Sir Isaac Newton's Principles''. The title given comes from the text explaining the diagram, which is available in full from Project Gutenburg, at https://www.gutenberg.org/files/60619/60619-h/60619-h.htm
[Ref: 56853] £65.00