Portable: The tool is lightweight and portable, with a mini metal handle, which is easy to hold. High quality material: High quality metal and plastic shell, sturdy , wear-resistant, rainproof and durable. How to use: Easy to use, just put the mini metal wheel on the map and scroll, the pointer will point to the accurate scale. Usage: It can help you quickly calculate the distance by measuring the distance between two points on the map. Applicable fields: Gifts for people who love outdoor activities. Suitable for outdoor use, hiking, hiking, cycling, hunting, etc. Product Description Features: Portable: L The tool is lightweight and portable, with a mini metal handle, which is easy to hold. High quality material: High quality metal and plastic shell, solid, wear resistant, rainproof and durable. How to use: Easy to use, just put the mini metal wheel on the map and scroll, the pointer will point to the precise scale. Usage: It can help you quickly calculate the distance by measuring the distance between two points on the map. Applicable fields: Gifts for people who love outdoor activities. Suitable for outdoor use, hiking, hiking, cycling, hunting, etc. Specification: Material: Aluminum alloy + ABS + Acrylic Color: shown as picture Size: approx. 9.5 x 4.5 x 1.3cm/3.74 x 1.77 x 0.51inch Weight: approx. 30g Package List: 1 x Card Tool