Planispheric Compasses

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Has no specific name.

Contents

Inventor

Guidobaldo del Monte (1545-1607)

Historic Period

1579

Description

Instrument designed by Guidobaldo del Monte to facilitate drawing the curves in universal planispheres. Formed of two hinged arms fixed to a rectilinear base, the instrument could be used to trace any arc of a circumference passing through three given points

Bibliographical Resources

Dal Monte, Guidobaldo, Guidiubaldi e Marchionibus Montis Planisphaeriorum universalium theorica, Pisauri, apud Hieronymum Concordiam, 1579.


Images

Guidobaldo Dal Monte, Planisphaeriorum universalium theorica, Pesaro 1579, p. 54.

Author of the entry: Filippo Camerota

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