Sextant Astra IIIB : Zero Magnification Sight Tube

Although the Sight Tube was designed specifically for the Astra IIIB sextant, it also works perfectly on most other metal sextants with a standard telescope mounting slot.

The aiming tube is made of durable plastic and resistant to high temperatures.

The interior is blunt to reduce annoying reflections. The exterior is finished in a matte black to match the finish of most sextants.

The sliding rubber eyecup (item N°0505) suits him.