The Hampton Nautical special antique brass 4-Inch sextant has a slow motion control to allow fine adjustment of the elevation angle. A built-in magnifier can be swung into position to assist in reading the German silver Vernier scale, and there are six swing-arm filters. The sextant is engraved "Hampton nautical."--These models are perfect for the collector or the beginner interested in learning celestial navigation. A beautiful handcrafted hardwood storage and display box made out of a high quality smooth finish hardwood comes with this antique brass sextant. The box has one clasp and a brass filling of the Hampton Nautical anchor and rope embedded in the top of the box.