"Simple to use and understand, The Silva Starter 1-2-3 Compass is ideal for youngsters learning the art of navigation. Durable, clear baseplate is small enough to fit young hands. 2 dial graduations along with both inch and millimeter scales allow them to plot courses for adventures. Convenient lanyard hole. 3""L x 2""W x 0.5""H. Weight: 2.4 oz.Manufacturer model #: 544900. Ideal for young navigators Durable, clear baseplate fits in small hands 2 dial graduations with both inch and millimeter scales Convenient lanyard hole"