STEM LAB-Curvimeter

The STEM Curvimeter Model Kit is a miniature map measurer, also known as an opisometer. This mechanical toy measures the length of arbitrary curved lines and helps to calculate the distance between points on a map more precisely than a ruler or a compass can. You can use it for completing homework assignments or while hiking in remote areas without Internet access. Like other UGears construction kits for adults and children, this educational toy has an iconic design and is easy to use.

UGears STEM LAB helps educate kids while they’re having fun. Our building toys unveil the basic concepts of science, technology, engineering, and math and help children relate to things in the real world. The hands-on experience of putting things together is fun and easy because each machine is fully explained so that anyone can understand how it functions. You can assemble UGears science kits for children and adults by yourself or as a group project.


  • Model Size: 4.5 x 3.3 x 6.6 in
  • Package size: 8.1 x 7.4 x 2.5 in
  • Number of parts: 109
  • Level: Easy
  • Assembly Time: 2 hours
  • Recommended Age: 8+
  • Kit weight: 0.9 lbs
  • Manufacturer: UGears