Kala Pocket Nocturnal

Tell the true solar time with surprising accuracy!

Kala Pocket Nocturnal
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Kala Pocket Nocturnal

Tell the true solar time with surprising accuracy!

As a family of Austrian watchmakers we have spent 23 years crafting the design of this solid brass and steel equatorial ring pocket sundial in the same purpose-built factory near Graz in Austria - and are proud to say that, because it measures just 60mm in diameter, it meets the official international sizing standard for pocket watches.

Made out of solid brass and steel, the Kala Pocket Sundial is a contemporary take on a historical model - the original can be found at the Royal Observatory in Greenwich, London.

It tells the true solar time anywhere in the world because the Sun's angle to the equatorial plane takes different values over the course of the year, and the small hole mask in the centre of the sundial is adjustable, plus set to the date.

The result is surprising accuracy estimated by experts to be consistently better than +/- 10 minutes vs. the true solar time!

Further, once setup, the sundial is a model of our planet too with the bridge parallel to the earth's axis, and it can thus be used as a precise compass - making a truly versatile instrument.

€49.90



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Produced in a small workshop outside of Madrid, Spain, this carefully crafted instrument measures just 60 mm (around 2 inches) in diameter and meets the international sizing standards for pocket watches. Made out of solid brass, the Kala Pocket Nocturnal and Tide Computer is a contemporary take on historical models.

The nocturnal is a star clock that is used to obtain the time at night using fixed stars visible in the northern hemisphere. On the backside is a historic tide computer, helping you determine the time of high tides at your current location.

This charming instrument can only be used on the Northern Hemisphere as it relies on the Polar Star (Polaris) to tell your local time. It will remain operationally accurate for many years because the variation in the direct ascension varies very little over the course of centuries, making it a truly long-lived instrument and unique gift.