The compass features a triangle indicator that points to the magnetic north. A side window with a red reference line allows for easy reading of azimuth data. The scale ring is marked at 0 and 180 degrees, with positioning columns at these points, enabling the user to set the target direction by rotating the scale ring. The compass is balanced in design, preventing tilting and friction against the window frame when not level, which helps avoid jamming. Scientifically designed for use in both the northern and southern hemispheres. Precision internal teeth on the scale ring enhance calibration accuracy and help reduce directional error. Waterproof up to 50 meters, suitable for deep water use. The liquid-filled, light-absorbing compass absorbs natural or artificial light and emits a glow in dark conditions for accurate data reading at night. Includes a high-density, high-quality elastic rope strap that is strong, durable, and adjustable. Name: Diving Compass With Rope Note: Maximum diving depth 50M Color: Black Material: Plastic Package Contents: 1 x Diving Compass With Rope Only the items listed above are included; other products are not included. Note: Lighting reflections and differences in display screens may cause slight variations between the color shown in the image and the actual item. Measurement may vary by +/- 1-3 cm.