Scout Compasses were originally used in the British army between the first and second world wars. The Scout Compass is so luminous that readings can be easily taken at night. The compass automatically locks when its arms are folded down which protects the dial and magnetism during transportation. A small knob on the side freezes the compass card for taking a reading. A sighting arm folds out and readings are taken with a magnifier, which is on the sighting arm. Please note: This reproduction is not designed for taking accurate measurements. This Scout Compass also makes a wonderful nautical gift.