Theodolite

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Name coined by the inventor combining the Greek words theaomai (to observe) and odos (road).

Contents

Inventor

Leonard Digges

Historic Period

ca. 1570

Description

Instrument for architectural and topographical measurements. Developed by Leonard Digges and described by his son Thomas, the theodolite is a variant of the polymeter – having basically the same structure – which houses a compass for orientation in land surveying.

Bibliographical Resources

Digges, Thomas, A geometrical practical treatise named Pantometria, divided into three Bookes, Longimetria, Planimetria, and Sterometria..., London, 1571.

Existing Instruments

Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 149.
Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 1356.
Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 154.
Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 150.
Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 2528.
Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 240.
Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 584.
Firenze, Museo Galileo. Istituto e Museo di Storia della Scienza, inv. 3507.

Links (External)

http://masaccio:81/catalogue.museogalileo.it/indepth/Theodolite.html

Images

Leonard Digges. A geometrical practise named pantometria. London, 1571: base del teodolite.

Leonard Digges. A geometrical practise named pantometria. London, 1571: scala altimetra del teodolite.

Author of the entry: Filippo Camerota

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