From €2,135.00 *

Prices incl. VAT plus shipping costs

From €1,794.12 Plus VAT

More information




Choose between one of the two cases:

  • Signal yellow Rough Case (waterproof, shockproof and floatable)
  • Wooden case with noble print outside and inside on the lid

The engraving is on a brass plate and not directly on the sextant frame

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  • 43017s

With its polarizing filters and the Schüler-double-prism, the HORIZON ULTRA is optimally equipped for sun observation. The double prism redirects the horizon beam to the right and left of the sun’s reflection on the water and thus prevents any lighting-related measuring errors. In addition every little sloping of the sextant is immediately visible on the horizon.

Furthermore, there are scales for a combined dip and index error adjustment on the drum screw. This index error adjustment on the sextant was developed by Bobby Schenk.

The polarization filters allow for continuous adjustments toward the horizon as well as the sky. The large mirror makes sure that you never lose sight of the stars, even when the seas are rough and the boat experiences heavy heeling.

Please note: The 6 x 30mm telescope as well as the artificial horizon do not fit together with the sextant in the Rough Case. Here we recommend the wooden case, in which an additional holder is attached.

More information:

Sextant frame

Horizon mirrors

Combined dip and index error adjustment

Double prism (Schüler)

Construction of a sextant

Service & Repair


Colour: Black, White
Scope: 4x40
Horizon mirror: Full-view
Astigmatizing lens: x
POL filtre:
Double prism:
Neck strap:
Non-slip legs:
Index error adjustment:
Dip adjustment:
Memory foil:
Pentagonal Prism: x
BSH type approval: x
Frame material: Brass
Measurement accuracy: +/-10“
Case: Wooden case, Rough Case
Weight: 1,80 kg
Weight incl. case: 5,50 kg
Case dimension (mm): Wooden case 320 x 365 x 185, Rough Case 380 x 310 x 190
  • Sextant
  • Selected case
  • Neck Strap
  • Mirror adjustment wrench
  • Towl for cleaning optical parts
  • Brush
  • Operating instructions
  • Quality certificate
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