1. Professional The compass works accurately anywhere on earth. , magnifying glass, ruler, mile marking, inch marking, vertical alignment correction and more, it provides you with a professional compass with multiple functions. 2. Usage: Place the compass flat on the palm or map to ensure accurate positioning. When the compass faces north, adjust the dial to align it with the magnetic needle. If the magnetic needle rotates abnormally and is disturbed by the magnetic field, change the position or move away from the electronic device. 3. and lightweight: It fits comfortably in your hand and is very small. With a lanyard, you can easily attach the small compass to a belt or backpack and wear it around your neck. 4. Longterm use: The base of this portable compass uses acrylic substrate, and the ingenious folding design is not only easy to carry and store, but also effectively protects the magnetic needle inside. The product has excellent environmental adaptability, can work stably under different conditions and effectively extends the life.