Horary Quadrant of Girolamo della Volpaia - Vintage Quality Solid Brass Model

Description

Vintage etched solid sheet brass copy of the 16th century mathematical scientific instrument
Horary Quadrant of the Della Volpaia family Florence 1570. The original resides in the collection of the Galileo Museum, Istituto di Storia della Scienza, Florence.
The quadrant, is set for latitude 43° (corresponding to the belt including Tuscany, Umbria, and the northern part of Lazio). It includes a shadow square, hour lines and a "Tabula Solis motus" (Table of the motion of the Sun) indicating the Sun's entrance into the zodiac signs.
This exact copy (except that the terms "Vmbra Retta / Vmbra Versa flanking the square  & some shading on the ribbon have been omitted) measures 13" by 13". Unmarked. From the estate of prominent designer Paul MacAlister (1901-1990) who was very interested in antique scientific instruments.
In 1974 he designed a cardboard kit to recreate an astrolabe, an astronomical instrument with a history going back to ancient times. The kit was published as part of a book by Roderick S. Webster titled “The Astrolabe. Some notes on its History, Construction and Use”. Probably made in the mid 20th century. I have been unable to find another like it except for the original.
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