Изготовлено в Германии в 2000 г.
Секстант не был в эксплуатации.
The Drum Sextant is used, together with other nautical instruments, for astronomical position finding on sea. Measurement of the angle between a fixed and a movable flat mirror enables determination of the dip distances of stars.
Near the cost the position of the ship can also be determined by measuring the horizontal angles (intersecting according to fixed points of known position).
2. Technical Data
Telescope effective aperture 40 mm
magnification 4 x
Graduated arc radius 17 cm
length of divisions -5° to+ 125° scale intervals 1°
Graduated drum scale intervals 1
estimation to 0.1 '
Dimensions of sextant 26x24x13 cm3
Dimensions of box 34 x 32 x 17 cm3
Weight of sextant 1.4 kg
Weight of sextant and box 4.5 kg