Parallel Ruler

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Camerota, Filippo, ''Il Compasso di Fabrizio Mordente. Per la storia del compasso di proporzione'', Firenze 2000.  
Camerota, Filippo, ''Il Compasso di Fabrizio Mordente. Per la storia del compasso di proporzione'', Firenze 2000.  
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|strumentiesistenti= [http://catalogue.museogalileo.it/object/BoxForMathematicalInstruments_n02.html Florence, Museo Galileo. Institute and Museum of the History of Science, Inv. 597].<br />
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|strumentiesistenti=  
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Chicago, Adler Planetarium, DPW-36b.
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- Museo Galileo, Institute and Museum of the History of Science, Florence <br>
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[http://catalogue.museogalileo.it/object/BoxForMathematicalInstruments_n02.html Florence, Museo Galileo. Institute and Museum of the History of Science, Inv. 597].<br />
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- Adler Planetarium, Chicago <br>
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[http://www.adlerplanetarium.org/4dlink/4DACTION/webserveimage?DPW-36b Chicago, Adler Planetarium, inv. DPW-36b]<br>
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- Museum of the History of Science, Oxford <br>
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[http://emu.mhs.ox.ac.uk/Display.php?irn=8371&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 17611]<br>
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[http://emu.mhs.ox.ac.uk/Display.php?irn=2304&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 37414]<br>
 +
[http://emu.mhs.ox.ac.uk/Display.php?irn=1398&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 54316]<br>
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[http://emu.mhs.ox.ac.uk/Display.php?irn=9910&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 68695]<br>
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[http://emu.mhs.ox.ac.uk/Display.php?irn=1397&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 46823]<br>
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[http://emu.mhs.ox.ac.uk/Display.php?irn=1400&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 36915]<br>
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[http://emu.mhs.ox.ac.uk/Display.php?irn=10397&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 86038]<br>
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[http://emu.mhs.ox.ac.uk/Display.php?irn=9616&QueryPage=%2FAdvQuery.php Museum of the History of Science, Oxford, inv. 81312]<br>
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http://boatsafe.com/navigation/rules1.htm (English)
|immagini= <gallery widths=230 heights=368 perrow=3>
|immagini= <gallery widths=230 heights=368 perrow=3>

Current revision as of 08:58, 8 September 2010

Name in use since the sixteenth century (documented in the inventory of Federico Cesi's belongings).

Contents

Inventor

Gasparo Mordente


Historic Period

1584


Description

Instrument formed of two rulers attached to two arms along which they slide parallel to each other. Invented by Gaspare Mordente, the instrument is described in the treatise dedicated to his brother Fabrizio's compasso magistrale (Il Compasso del S. Fabritio Mordente con altri Istromenti Mathematici ritrovati da Gasparo suo fratello [The compass of Sig. Fabrizio Mordente with other mathematical instruments described by his brother Gasparo], Antwerp 1584) and in the subsequent booklet on the nine-point compass (La Quadratura del Cerchio, la Scienza de' residui, il Compasso et Riga... [The squaring of the circle, the science of residuals, the compass and rule…], Antwerp 1591). The instrument served mainly for tracing parallel lines but the proportional scales marked on the two rules also made it useful, in combination with the compasso magistrale, for calculating surface areas and volumes.


Bibliographical Resources

Mordente, Fabrizio, Il Compasso del S. Fabritio Mordente con altri Istromenti Mathematici ritrovati da Gasparo suo fratello, Anversa 1584, lib. I, cap. VII.

Mordente, Fabrizio, La Quadratura del Cerchio, la Scienza de' residui, il Compasso et Riga di Fabritio, et di Gasparo Mordente fratelli salernitani, Anversa 1591 (copia manoscritta, Biblioteca Nazionale di Roma, Fondo Gesuitico 615).

Inventario dei beni di Federico Cesi, Roma, Bibl. Lincea e Corsiniana, Archivio Linceo 32, cc. 84v-102v (“Riga doppia graduata 8,50”); in, Anna Nicolò, Francesco Solinas, 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.

Camerota, Filippo, Il Compasso di Fabrizio Mordente. Per la storia del compasso di proporzione, Firenze 2000.


Existing Instruments

- Museo Galileo, Institute and Museum of the History of Science, Florence
Florence, Museo Galileo. Institute and Museum of the History of Science, Inv. 597.


- Adler Planetarium, Chicago
Chicago, Adler Planetarium, inv. DPW-36b


- Museum of the History of Science, Oxford
Museum of the History of Science, Oxford, inv. 17611
Museum of the History of Science, Oxford, inv. 37414
Museum of the History of Science, Oxford, inv. 54316
Museum of the History of Science, Oxford, inv. 68695
Museum of the History of Science, Oxford, inv. 46823
Museum of the History of Science, Oxford, inv. 36915
Museum of the History of Science, Oxford, inv. 86038
Museum of the History of Science, Oxford, inv. 81312


Links (External)

http://boatsafe.com/navigation/rules1.htm (English)


Images


Author of the entry: Filippo Camerota

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