/Ugears/ Ukrainian wooden model STEM expedition rangefinder Curvimeter

Difficulty level: ★☆☆, suitable for novices Estimated assembly time: 1~2 hours More accurate than a ruler! Assist you to measure the length of the curve. https://youtu.be/NMNwKd5qpXA Assemble and learn how a map rangefinder works! Suitable for children aged 8-14 https://shoplineimg.com/5c357470e84a590001284b1b/external-e476419ad814dcbd368a1e36be2707ea/original?image_url=https%3A%2F%2Fimg.shoplineapp.com%2Fmedia%2Fimage_clips%2F5f599a2823f778002d5c854e%2Foriginal.jpg%3F1599707687 In the Ugears education series, each model contains two kinds of learning -Realization: Actually assemble the model following the instructions to fully understand the interesting principles. -AR: Through augmented reality, learn the operating principles of rangefinders, and actually apply them in life through virtual methods. https://shoplineimg.com/5c357470e84a590001284b1b/external-150da8ffd85069816b58248db40db61c/original?image_url=https%3A%2F%2Fimg.shoplineapp.com%2Fmedia%2Fimage_clips%2F5f599a41e18a262d2a47bfa4%2Foriginal.jpg%3F1599707712 Learn the principle of map rangefinder The map rangefinder is an instrument for measuring the length of a curve, which can calculate points on the map more accurately than a ruler or a compass. https://shoplineimg.com/5c357470e84a590001284b1b/external-6579a3611e2d4577a12c34bbab610621/original?image_url=https%3A%2F%2Fimg.shoplineapp.com%2Fmedia%2Fimage_clips%2F5f599aafa42b33003f29cff7%2Foriginal.jpg%3F1599707822 The instrument consists of a measuring wheel, a surface and a pointer. When the wheel is measured along the map, the pointer will move around the surface marked with measurement units such as centimeters and inches. After the measurement is completed, the map scale is multiplied by the scale The denominator in is the true distance. https://shoplineimg.com/5c357470e84a590001284b1b/external-cb784de43f24e122357aa2ae061ebd83/original?image_url=https%3A%2F%2Fimg.shoplineapp.com%2Fmedia%2Fimage_clips%2F5f599b012ec16600244eb601%2Foriginal.jpg%3F1599707904 Who invented the rangefinder? There is no definite evidence to show who the inventor is. One argument is the principle put forward by the Roman architect Vitruvius; One theory was invented by the ancient Chinese astronomer Zhang Heng; the Russians believed it was invented by their natural scientist Lomonosov. Although there are various claims, in short, the first official registered patent for a map rangefinder was owned by a British engineer, Russell E. Morris. https://shoplineimg.com/5c357470e84a590001284b1b/external-28c97b68c4c832c50c205fe5745ce9f9/original?image_url=https%3A%2F%2Fimg.shoplineapp.com%2Fmedia%2Fimage_clips%2F5f599b180300df00346c0e7a%2Foriginal.jpg%3F1599707927 Learn new knowledge while having fun together through the STEM series! https://shoplineimg.com/5c357470e84a590001284b1b/external-3770c92b4830014f7d03f05cc142ab50/original?image_url=https%3A%2F%2Fimg.shoplineapp.com%2Fmedia%2Fimage_clips%2F5f599b6ea26e5500390fd029%2Foriginal.jpg%3F1599708013 Model specifications: Origin: Ukraine Warranty: Warranty for non-artificial damage can be provided. Appreciation period is 7 days, non-trial period, and no return or exchange is allowed after opening. Material: Wooden Model size: 11.5*10.3*5.7cm Packing size: 8.1*7.4*2.5cm Weight: about 0.5KG Contents: model and assembly steps pictures Number of parts: 109 Estimated assembly time: 1-2 hours Precautions contain sharp objects, please use them carefully.