MULTI-PURPOSE - Suitable for travel, adventure, map position, military equipment, , etc. HD azimuth disk and clear scale dial let you measure quickly and clearly. Deflection angle lens, you can quickly measure the target height, ope. Scale in centimeters and inches, suitable for different people. Advantage: The size of the small and portable altimeter is 3.01 x 2.13 x 0.55 inch (L * W * H), the dial diameter is 1.5 inch, the weight of 106 g / 0.23 lb. Equipped with an exquisite nylon bag, easy to store and keep. Professional altimeter - the altimeter is a professional, versatile, waterproof and shockproof altimeter. It is made of aluminum alloy and very durable. The package includes: Portable outdoor altimeter