Modernized Fuess Model IVa reflecting goniometer
R. Fuess, Berlin-Steglitz
Horizontal circle reflecting goniometer (black lacquered
and nickel plated brass) with covered graduated circle
and vernier read-out (both silver plated), telescope and
collimator with Websky signal, adjusting wheels, and goniometer
head. Height 22.5 cm, circle diameter 11 cm.
Signed on the cover for the graduated circle "R.
Fuess, Berlin - Steglitz", first half 20th century.