Schrettegger, Johan (1764-1843). Equatorial sundial and compass
Brass, 7 x 7 x 7 cm (octagonal), signed "Johan Schrettegger in Augsburg", in the orig. board box. The hook for closing the box loose but preserved. The old ownership entry "A Nijenhuis Zaanstad [?] 1857 [?]" in pen on inside of lid.