This Sextant Is Made With 100% Premium Brass Manufactured By SK ENTERPRISE. We are A Manufacturer Of Nautical Items From a 20th Century. You can Trust On Us Any How We Can Promise You That You Will Get A 100% Genuine Item We also Accept Return If Item Was Not Same As Shown In Picture And Does'nt Meet With Description. We Are Having A large Number Of Sextant In Different Designs Sizes You Can Check Our Amazon Store Or Contact Us For More Related Products. Sextant Measures - 9" x 9" x 4.5", Made Of BRASS And Fully Functional Sextant. These Sextants are not an antique but we can replicated as same as originals. A great work by Indian artisans. These Sextants are fully functional and made out of brass polished with antique finish. These Sextants are a reflecting navigation instrument used to measure the angle between any two visible objects. A Sextant can also be used to measure the lunar distance between the moon another celestial object. People got amazed when they can see this kind of product in this modern era. The critical development was made independently and almost simultaneously by John Hadley in England and by Thomas Godfrey, a Philadelphia glazier, about 1731. The fundamental idea is to use of two mirrors to make a doubly reflecting instrument?the forerunner of the modern sextant. Best Regards - SK ENTERPRISE Additional Details ------------------------------ Product description: This Sextant Is Made With 100% Premium Brass Manufactured By SK ENTERPRISE. We are A Manufacturer Of Nautical Items From a 20th Century. You can Trust On Us Any How We Can Promise You That You Will Get A 100% Genuine Item We also Accept Return If Item Was Not Same As Shown In Picture And Does'nt Meet With Description. We Are Having A large Number Of Sextant In Different Designs Sizes You Can Check Our Amazon Store Or Contact Us For More Related Products. Sextant Measures - 9" x 9" x 4.5", Made Of BRASS And Fully Functional Sextant. These Sextants are not an antique but we can replicated as same as originals. A great work by Indian artisans. These Sextants are fully functional and made out of brass polished with antique finish. These Sextants are a reflecting navigation instrument used to measure the angle between any two visible objects. A Sextant can also be used to measure the lunar distance between the moon another celestial object. People got amazed when they can see this kind of product in this modern era. The critical development was made independently and almost simultaneously by John Hadley in England and by Thomas Godfrey, a Philadelphia glazier, about 1731. The fundamental idea is to use of two mirrors to make a doubly reflecting instrument?the forerunner of the modern sextant. Best Regards - SK ENTERPRISE