Combination portable sundial and instrument for calibrating sundials
Summary
Public domain photograph of 3d object, free to use, no copyright restrictions image - Picryl description.
Horology is a set of sciences about the measurement of time. In the private and most common sense, the term refers to the study of mechanical devices for measuring time, both in a professional context (watchmaking) and in an amateur context (watch-related hobbies, including collecting antique watches).
Tags
Date
1600 - 1800
Source
Metropolitan Museum of Art
Copyright info
Public Domain Dedication (CC0)