The Sea Chest Nautical Bookshop Freiberger Drum Sextant (Split Mirror)
Freiberger Drum Sextant (Split Mirror)
Freiberger



   

Price:  £599.00 

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.

Graduated arc of radius 170mm with a scale of degrees of -5 to +125 degrees measured in one degree intervals. Drum graduations are 1'. Visual interval 0.1'.

Dimensions (sextant only) 26cm x 24cm x 13cm.

Wooden carrying case dimensions 34cm x 32cm x 17cm.

Weight Sextant only 1.4kg

Weight Sextant with case 4.5kg

Hardwood handle.

Stock colour Black other colours Ivory and Marine Blue to order.

Key for mirror adjustment.

Test certificate.

Operating and adjust manual

Optional Extras include:-

Illumination device which is detachable (battery operated)

8 x 30 monocular telescope

Can be supplied as a surveying sextant (for horizontal sights) and fitted with a detachable penta prism to extend the measuring range to 215 degrees.

Freiberger Drum Sextant (Split Mirror)