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Surveying Instruments of Greece and Rome

Surveying Instruments of Greece and Rome

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M. J. T. Lewis
Cambridge University Press, 5/3/2001
EAN 9780521792974, ISBN10: 0521792975

Hardcover, 410 pages, 23.5 x 16 x 2.7 cm
Language: English

The Greeks and, especially, the Romans are famous for the heroic engineering of their aqueducts, tunnels and roads. They also measured the circumference of the earth and the heights of mountains with fair precision. This book presents new translations (from Greek, Latin, Arabic, Hebrew and Syriac) of all the ancient texts concerning surveying, including major sources hitherto untapped. It explores the history of surveying instruments, notably the Greek dioptra and the Roman libra, and with the help of tests with reconstructions explains how they were used in practice. This is a subject which has never been tackled before in anything like this depth. The Greeks emerge as the pioneers of instrumental surveying and, though their equipment and methods were simple by modern standards, they and the Romans can be credited with a level of technical sophistication which must count as one of the greatest achievements of the ancient world.

Introduction
Part I. Instruments and Methods
1. The basic elements
2. Background to the dioptra
3. The dioptra
4. The libra
5. The groma
6. The hodometer
Part II. Practical Applications
7. Measurement of the earth
8. Mountain heights
9. Canals and aqueducts
10. Tunnels
11. Roman roads
12. Epilogue
Part III. The Sources
The treatises
Other sources
Appendix. Uncertain devices.