Basic Pocket Compass for Science, Education, Experiments, Students, and Teachers 40mm dia x 9mm thick

IDEAL FOR LEARNING. Great for learning about the earth's magnetic field and an essential piece item for explorers of the outdoors. PERFECT FOR OUTDOOR USE. An easy-to-use pocket compass, an essential piece of kit for the intrepid lover of the outdoors. EASY TO USE. This pocket compass is extremely easy to use with the direction of the earth's North Pole clearly indicated by the red half of the compass needle. SPECIFICATIONS. 40mm diameter x 9mm thick.