Usage examples (4)

• The Temple or Tower of the Winds, has been very justly termed "the most curious existing monument of the practical gnomonics of antiquity."
• Before clocks were invented, people told the time by sun-dials, and there was a whole science of sun-dials, called gnomonics.
• There he lived for fourteen years, engaged in mathematics and in physical experiments, and publishing his work on gnomonics and perspective.
• Holywood), and a dissertation upon the astrolabe; the fourth contains what was up to that time the most detailed and copious discussion of gnomonics, i.e. the art of...