Cambridge Encyclopedia » Cambridge Encyclopedia Vol. 45

Leonard Digges

navigation surveying thomas

English applied mathematician. He became known for his valuable work in surveying, navigation, and ballistics, and is credited with inventing the theodolite and pioneering the construction of the telescope. He was probably self-educated, but his books on surveying and navigation went through many editions in the 16th-c. He took part in Thomas Wyatt's rebellion in 1554, was condemned to death, but later pardoned and fined. His son, Thomas Digges (1546–95), became an astronomer and in 1576 published a revised edition of his father's perpetual almanac, A Prognostication everlasting, with several new appendices.

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