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.
A comprehensive account of ancient surveying instruments together with translations of all the ancient sources.
'I heartily recommend [Lewis]'s book as a model of integrated analysis relevant to many different aspects of the classical world.' Journal of Roman Studies
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