Nauticalmart Captain's Marine Brass Sextant with Rosewood Box 8" Size: 8" L x 8" W x 4" H Polished brass body and mechanisms Glass optics for a clear view Fully functional sextant operates like a real navigational tool Solid rosewood box lined with felt to store sextant Product Description This premium quality Captain's Sextant is a beautiful full-scale reproduction of the British Captain's vernier readout brass nautical sextant. Each sextant is expertly crafted from solid brass and marked with a unique serial number. The sextant has an accurately divided German Silver scale, and a gear driven slow motion control for making small adjustments to the index arm. A powerful magnifier can be swung into position to assist in reading the vernier scale. The sextant's telescope has polished glass lenses and produces a sharp magnified image. The index mirror has three recessed adjustments. There are six tinted swing-arm filters with heavy brass filter mounts. The sextant comes with a beautiful felt-lined hardwood case.