Astronomical Images : Mural dial for planetary (unequal) hours drawn for the latitude 48 degrees
Giovanni Battista Vimercato
Astronomical Images
<p style='text-align: justify;'>This book was intended to be of practical value to those who wanted to make a sundial, and includes examples of specific projections on folding plates. It focuses predominantly on fixed, rather than portable, dials, although it does describe the pillar dial. It was Giovanni Battista Vimercato's only publication, but it went through nine editions between 1557 and 1587, and a revised edition appeared in 1672.</p>