Marble?s? traditional brass body compasses are a 100-year-old institution with outdoorsmen worldwide. Teddy Roosevelt carried a Marble?s compass on many of his famous hunting expeditions all over America. Both Admiral Perry and Byrd used Marble?s compasses on trips to the North and South Pole. Our compasses have been routinely pinned on G.I. Bomber and flight jackets in every American conflict since World War ll. Marble?s? compasses are still in use today by serious outdoorsmen the world over. Available in both pin on and pocket versions the Marble?s? compass still features solid brass bar stock construction that is CNC precision machined in the same traditional look. The brass casing is strong, malleable, waterproof, and will not rust. The movement rotates on an ultra smooth agate jewel bearing and our crystal is virtually shatterproof. With a distinctive revolving black face and green luminous letters the Marble?s? compass is simple and easy to read. Both historically significant and everyday practical the famous Marble?s? compass should be a part of every serious sportsman?s gear.