and high quality Small, lightweight, and portable Professional multi-function high precision on-board compass Ideal for marine, vehicle, boating, traveling, hiking, outdoor activities, and more Outer tick of outer ring functions as a CM ruler; pointer rotates one full week equals one centimeter Inner tick of outer ring features a 1:50,000 scale, suitable for 1:50,000 maps Outer tick of inner ring features a 1:20,000 scale, suitable for 1:20,000 maps Inner tick of inner ring features a 1:5,000 scale, suitable for 1:5,000 maps Instructions: Move the pointer to zero at the 1:1 scale. Align the wheel with the starting point on the map and roll it along the route to the destination. Based on the map scale, read the distance in kilometers. Material: Plastic Color: Yellow + White Package Contents: 1 x Map Rangefinder Note: The package includes only the items listed above; other items are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.