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The Sextant

Artikelnummer: 825.SXT-E

Kategorie: Englisches

Sofort verfügbar
Lieferzeit: 2 - 4 Werktage (DE - Ausland abweichend)

23,90 €

inkl. 19% USt. , zzgl.

Hier geht es zur deutschen Version: Der Sextant

Pre-cut cardboard kit for a fully functional sextant as an introduction to astro-navigation

Revolution of navigation

Until the introduction of satellite-based systems (GPS), the most important method for determining location on the high seas was to measure the height of the star above the horizon or the distance between stars as accurately as possible. After the quadrant and astrolabe, Jacob's Staff and magnetic compass, a new era in astro-navigation began with the invention of the first reflecting sextant. This instrument revolutionised navigation because from this point onwards it was possible to measure the height of the sun, for example, with unsurpassed accuracy and speed.

How it works

The principle is brilliant and at the same time amazingly simple: a rotating mirror makes it possible to align an image of the point to be measured with the horizon or another reference point and to read off the distance angle on a scale.

Our bestseller

The Sextant has been one of our bestsellers for over 20 years. It has been tried and tested in practice and scores with a display accuracy of between 5 and 10 minutes of arc. With more than 50,000 copies sold, it is probably the best-selling sextant in the world and also offers a brief introduction to the art of navigation. We recommend the artificial horizon as a useful addition.

Stk.

Scope of delivery:

4 pre-cut and printed sheets of construction cardboard, DIN A4
accessories:
- 2 stainless steel mirrors, 48 x 18 mm
- 1 solar filter foil, 38 x 18 mm, black
detailed assembly instructions

Features: measuring accuracy of 5 arc minutes

Dimensions of the built item: approx. 20 x 23 x 5.3 mm

Construction time: approx. 5 hours

Manufacturer: AstroMedia GmbH, Im Wirrigen 30, 45731 Waltrop, Germany, astromedia.de

Anspruch & Dauer

Instructions for construction and use:

Detailed illustrated construction manual:

This is what you will need for assembly:

a firm and flat working surface, useful is a cutting mat
a craft knife or a scalpel
a good universal glue
fine sandpaper
some alcohol to clean the mirrors
a laundry peg
a thin black waterproof marker pen

Here in our shop you will find lots of different helpful crafting tools

Supervision by adults:
Children under the age of 14 should use the kit under adult supervision to avoid risks due to improper handling.

Take care with small parts:
Choking hazard! Keep small parts out of the reach of small children.

Risk of injury:
Take particular care when handling pointed and sharp parts! Use sharp tools with care and take suitable safety measures to avoid injury if necessary.

Fire hazard:
Keep away from open sources of fire and heat. Product contains highly flammable materials.

Danger from sunlight:
Never look directly at the sun through the sextant without using a suitable sun filter, as this can cause serious eye damage.

Use of adhesives:
Follow the manufacturer's safety instructions when using adhesives. Work in well-ventilated areas and avoid skin or eye contact.

Intended use:
The kit should be used in accordance with the enclosed instructions. Independent modifications may impair the functionality and safety of the model built.

Hersteller gemäß GPSR
AstroMedia GmbH, https://astromedia.de