Egnatio Danti's great astronomical quadrant / Maria Luisa Righini Bonelli, Thomas B. Settle.
Abstract:
In 1572 Egnatio Danti installed a large quadrant on the façade of Santa Maria Novella in Florence. Here we describe the quadrant and compare it both with a contemporary sketch and with written accounts of it by Danti and others. We also offer suggestions about its place in the Tuscan world of Grand Duke Cosimo I
Annali dell'Istituto e Museo di storia della scienza di Firenze A. 4, fasc. 2 (1979), p. 5-13