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The quality of the Tamaya Spica Nautical Sextant has been proven in many years of use by ocean-going navigators.
Its optical system is designed to assure the maximum performance with a full 57 mm index mirror.
The Tamaya Spica Sextant features a lightweight die cast aluminum alloy frame with a corrosion resistant black finish and a
Bronze arc for highly accurate +/-10 arcsecond readings.
Two interchangeable 4x40mm and 7x35mm telescopes with special rubber eye protectors are available.
The Tamaya Spica Nautical Sextant offers full illumination of both the arc and drum.
The sextant can be stored in the fitted case with either scope mounted.
This sextant is fully functional for navigation and comes with a certificate of calibration.
We also offer the similar lower cost Tamaya Jupiter Sextant,
the Stanley London Mark 3 Sextant, and the
C. Plath Decorative Antique Reproduction Sextant.
The Tamaya Spica Sextant with Storage Case normally sells for $2,252.99, but we offer it for only $1,899.99.
Measuring Range: -5 to 125 degrees
Accuracy: +/-10 seconds.
Telescopes: 4x40mm: angle of view 7 degrees, relative brightness
100. 7x35mm: angle of view 6.5 degrees, relative brightness 25. All
optics are fully coated.
Frame: Lightweight die cast aluminum alloy with corrosion
resistant black finish. Bronze arc.
Vernier Scale: reads to 0.2'.
Index Mirror: 57x42 mm aluminized on the rear side.
Horizon Mirror: 57 mm diameter.
Four for index mirror
Three for horizon mirror
One special shade glass and one Polaroid glass for eyepiece of
Weight: 4 lbs
Carrying case: Molded plastic, with two slides
At least one telescope is required for use.
The case can hold the sextant and both telescopes.
The 4x40 scope has a brighter image than the 7x35 monocular and is best for low-light conditions or when the vessel is
The 4x40 scope has fully coated optics and a large 40 mm objective lens to yield a sharp four-power non-inverted image.
The Tamaya 7x35 monocular scope produces a sharp high power 7-power wide angle non-inverted image.
The Tamaya 7x35 monocular scope is more powerful than the 4x40 scope for more accurate readings.
Either scope fits both Tamaya's Spica and Jupiter Sextants.
The scope has fully coated optics and a large 35 mm objective lens.
The 4x40 Scope is on sale for only $259.99 and the 7x35 Monocular Scope is on sale for only $499.99.
Tamaya Spica Sextant with Case (Requires Scope)
Now Only $1,899.99
Tamaya 4x40 Scope
Now Only $259.99
Tamaya 7x35 Monocular Scope
Now Only $499.99
Protective Storage Case
Tamaya Spica Sextant
with 4x40 Scope
7x35 Monocular Scope
and Height Adjustment
Right Side View
Left Side View
Detail of Micrometer Drum
Large 57 mm dia.
Large 57 x 42 mm Index Mirror
Sextant in Case