Freiberger Drum Sextant - Split View

The traditional instrument for celestial position finding in sea.

Comfortable weight and size with excellent balance from it's well designed light metal alloy frame. Large horizon and index mirrors which are tested for optical flatness and parallelism. The clamping device and micrometer drum are fully enclosed for protection against dirt and water spray.

Standard telescope 4x40 is adjustable for height and fitted with a protective rubbers eyepiece. The correct amount of brightness through the sextants optical light paths is controlled by means of swing in graded filters 4 for the index and 3 for the horizon mirrors.

Technical data

Graduated arc

Radius: 170 mm
Scale of degrees: -5° to 125°
Interval: 1°

Drum graduations

Interval: 1'
Visual interval: 0,1'

Telescope

Lens aperture: 40 mm
Magnification: 4x

Variation

Handle: Hardwood
Colour: Black

Dimensions

Drum sextant: 26x24x13cm
Carrying case: 34x322x17cm

Weight

Drum sextant: 1.4 kg
Carrying case: 4.5 kg