The Hampton Nautical Premium Quality 15 inch Brass Spyglass Telescope is a great gift for a nautical navigator in your family. The spyglass measures 15 inch when its four brass tubes, which are clear coated to protect the brass from tarnishing, are fully extended. The diameter of the objective lens is 30 mm. The spyglass is 5 inch when collapsed and features a smooth, hardwood wrapped handle. This spyglass also comes with a solid brass cap to protect the lens.Simply adjust the length from lens to eyepiece to bring the image into clear focus. The 15 inch Spyglass is shipped in a beautiful felt-lined, brass-inlaid hardwood case. The box features brass side inlets on all sides and the Hampton Nautical solid brass anchor-with-rope logo on the top. The box is a smooth hardwood, gloss finished, measuring 6 inch x 4 inch x 4 inch. Dimensions:15 inch L x 2 inch W x 2 inch H 10X Magnification Glass optics for a clear view (not plastic lenses) Polished brassspyglass with wood-cased body Fully functional spyglass focuses and magnifies Solid rosewood box adorned with brass anchor emblem Custom engraving/photo etching available: Logos, pictures or slogans can be easily put on any item. Typical minimum custom order is 100+ pieces. Minimum lead-time to produce and engrave is 4+ weeks.