A DEVIATOMETER
H Hughes & Son, early 20th century
signed on the metal plate H. HUGHES & SON IMPROVED COMPASS DEVIATOMETER 59, Fenchurch St. London. No 366. which is graduated 0-90-0-90°, above this a rotating equinoctial dial with hour circle for corrections, the plate gimballed in a wooden box.
12½in. (32cm.) high in case
A DEVIATOMETER
H Hughes & Son, early 20th century
signed on the metal plate H. HUGHES & SON IMPROVED COMPASS DEVIATOMETER 59, Fenchurch St. London. No 366. which is graduated 0-90-0-90°, above this a rotating equinoctial dial with hour circle for corrections, the plate gimballed in a wooden box.
12½in. (32cm.) high in case
.jpg?maxwidth=3840)