Roorkee Antique Sextant for Navigation/Marine Brass Sextant Instrument for Ship/ Celestial & Nautical Sextant with Two Extra Sighting Telescope/Astrolable Sextant Tool with Wooden Box Case This doubly reflecting navigation instrument is made of pure brass with antique finish & a protective wooden case. Includes two additional sighting telescopes This working sextant instrument is a memorable navy gift for birthdays, anniversaries, valentine's day & corporate functions. A great gift for maritime, nautical, hiking & outdoor enthusiast This astrolable sextant can be used to measure the angle between any two visible objects. It's primary use is to determine the angle between a celestial object and the horizon which is known as the altitude. This celestial navigation compass for sailors is an essential nautical decor to welcome your boy friend, daddy & loved ones with nautical parties. Adapts any special occasions like nautical baby shower Material: Brass | Finish: Antique | Product Dimension: 12 X 11 X 6 cm | Wooden Box Dimension: 15 X 15 X 8 cm