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Name coined by the inventor combining the Greek words monimos (that which remains immobile) and metron (measure).



Francesco Pifferi

Historic Period



Instrument for architectural measurements and surveying formed of a simple board with sheets of drawing paper on which the surveyor traced the sighted lines directly, constructing one by one the various triangles needed for calculating proportionally the estimated distances. A similar board was described already in the thirteenth century by Domenico da Chivasso, but the device is called by this name only in the treatise of Francesco Pifferi from Siena.

Bibliographical Resources

Domenico da Chivasso, Practica geometriae, ms., XIV secolo, Bibl. Laurenziana, San Marco 215, cc. 124v-144r.
Busard, H.L.L., ed., The Practica Geometriae of Dominicus de Clavasio (Cod. lat. Monac. 410), in Ā«Archive for the history of exact sciencesĀ», 2, 1965, 6, pp. 520-575.
Pifferi, Francesco, Monicometro instromento da misurar con la vista stando fermo, Luca Bonetti, Siena, 1595.

Links (External) (Italian)


Author of the entry: Filippo Camerota

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