Model: bkt 381 Weight: 180 g 1, measuring range: ( height ) 0 ~ 5000 meters; 580 – 1040 HPA; ( temperature ) – 30 DEGREE ~ 50 DEGREE Resolution: 20 m 3. specifications: length 85 × width 68 × height 28 mm, dial diameter 60 mm 4. storage condition: the temperature is between – 30 deg c and 65 deg c; Humidity less than 90 % Product description: this product is a barometer altimeter, built-in sensitive air pressure sensing device, can measure the real-time atmospheric pressure value of the location; Due to the principle of inversely proportional height and atmospheric pressure, can be used to measure the relative height; Real – time altitude can also be measured after altitude correction. This product is widely used for air pressure measurement, as well as mountaineering, fishing and other outdoor occasions, but not recommended for geographical survey! For details, please refer to the graphic below. Compass and small thermometer is just decorative effect, after all, is too small, the sensitivity is not high, to use the two functions, please go to the shop to search professional compass and thermometer. I introduction to products 1, the product design application of physical principles: ( 1 ) the air pressure decreases with the increase of altitude; ( 2 ) the change of air pressure will lead to the change of the weather, this change will be displayed on the altimeter dial through the transmission of high precision. The device can accurately measure position height ( absolute height ), height difference, atmospheric pressure and forecast weather change. 2, no batteries and chargers, no maintenance and repair, is a reliable good tool; 3, can forecast the future weather changes according to the pressure value, let you be prepared; 4, easy to carry, reasonable design, bring you easy and convenient outdoor sports. Note: distribution of compass and thermometer is not suitable for high precision requirements of occasions!
