"Proteo Militare" (Military proteus)
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| - | |descrizione= Instrument for architectural and topographic measurements. Invented and described by the captain of the Papal fleet Bartolomeo Romano, the military proteus is an imaginative dagger designed for measurement. When removed from its sheath, its steel blade, composed of three superimposed blades, opens like a compass, and with the various scales engraved on it (degrees, shadows, arithmetical) it can be transformed into a [[quadrant]], [[geometrical quadrant]], [[Great Rule of Ptolemy]], [[archimetro]], '' | + | |descrizione= Instrument for architectural and topographic measurements. Invented and described by the captain of the Papal fleet Bartolomeo Romano, the military proteus is an imaginative dagger designed for measurement. When removed from its sheath, its steel blade, composed of three superimposed blades, opens like a compass, and with the various scales engraved on it (degrees, shadows, arithmetical) it can be transformed into a [[quadrant]], [[Geometrical Square |geometrical quadrant]], [["Gran Regola" (Great-Rule) of Ptolemy |Great Rule of Ptolemy]], [[Archimeter |archimetro]], ''Radio Greco'', ''balestriglia'' or [[Cross-Staff |Jacob's staff]], ''[[Radio Latino |radio latino]]'', an instrument serving for operations of plane geometry, for the proportioning of architectural orders and inscriptions, for compiling corographic and navigation charts, and for pictorial perspective. |
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Current revision as of 08:18, 8 September 2010
Name coined by the inventor with reference to the Greek god Proteus, who could change shape will.
Contents |
Inventor
Bartolomeo Romano
Historic Period
1595
Description
Instrument for architectural and topographic measurements. Invented and described by the captain of the Papal fleet Bartolomeo Romano, the military proteus is an imaginative dagger designed for measurement. When removed from its sheath, its steel blade, composed of three superimposed blades, opens like a compass, and with the various scales engraved on it (degrees, shadows, arithmetical) it can be transformed into a quadrant, geometrical quadrant, Great Rule of Ptolemy, archimetro, Radio Greco, balestriglia or Jacob's staff, radio latino, an instrument serving for operations of plane geometry, for the proportioning of architectural orders and inscriptions, for compiling corographic and navigation charts, and for pictorial perspective.
Bibliographical Resources
Crescenzio, Bartolomeo, Proteo militare di Bartolomeo Romano diviso in tre libri: nel primo si descrive la fabrica di detto proteo, et in esso nuovo instrumento, tutti gli altri instrumenti, di matematica che imaginar si possano: nel secondo, e terzo si tratta dell'uso di detto instrumento, nel quale si formano tutte le figure di geometria, e diversi instrumenti di prospettiva, pittura, scoltura, et architettura…, appresso Gio. Iacomo Carlino & Antonio Pace, 1595.
Inventario dei beni di Federico Cesi, Roma, Bibl. Lincea e Corsiniana, Archivio Linceo 32, cc. 84v-102v (“Pugnale d’ottone detto Proteo militare scudi otto”).
Nicolò, Anna, e Solinas, Francesco, Per una analisi del collezionismo Linceo: L’Archivio Linceo 32 e il Museo di Federico Cesi, in Federico Cesi, Atti del Convegno (Acquasparta, 7-9 ottobre 1985) Roma, Accademia Nazionale dei Lincei, 1986, pp. 193-212, in part. pp. 206-212.
Links (External)
http://wissensgeschichte.biblhertz.it:8080/Glossario/Glossario_Italiano/proteo_militare/edit_main
Images
 Bartolomeo Crescenzio. Proteo militare di Bartolomeo Romano diviso in tre libri: nel primo si descrive la fabrica di detto proteo, et in esso nuovo instrumento, tutti gli altri instrumenti, di matematica che imaginar si possano: nel secondo, e terzo si tratta dell'uso di detto instrumento, nel quale si formano tutte le figure di geometria, e diversi instrumenti di prospettiva, pittura, scoltura, et architettura…, Napoli, 1595, p. 4. |
Author of the entry: Filippo Camerota
