The compass is medium in size and easy to carry. It is recommended to put it in your pocket, backpack or directly on your neck so that your direction will always be correct.Product name: golden spiral compassSize: 9*6*3CM (length*width*height)Unfold 7.5*5.5*2.6CM (length*width*height) to fold.Dial diameter: 4.6CMWeight: 100G (including packaging)Structure and performance:1. Orientation measuring institution:It is composed of compass, sight and sight. The outer circle of the azimuth division is a 360° division with a mum division value of 2°; the inner circle is a 60-00 density division , and the mum division value is 0-20 divisions. The conversion between density and degree is shown in the table.Measurement accuracy: ±0-10 dense position ±1°2. Distance estimator:It is composed of rear sight and front sight. The angle between the two tips of the front sight and the center edge of the rear sight is 1-00, the length between the two tips is 12.34 mm, and the length between the rear sight and the front sight is 123.4 mm, which constitutes a 10:1 ratio ranging estimator.Measurement accuracy is 5%