1Sturdy And Durable: This science sun height measurer is made of excellent plastic and stainless steel material, which is sturdy and wear resistant, not easy to be damaged, and has a long service life. 2Waterproof And Drop Proof: This sun height measuring tool is waterproof and drop proof, you don't have to worry about minor damages, reliable quality ensures that it can be used for a long time. 3Multifunctional: This sun height study tool can be used both for learning to measure the sun's altitude, observing the change of shadows under the sun, and cultivating children's observation and analysis skills. 4Wide Application: This sun height measuring instrument has a wide range of applications and can be used in primary schools, laboratories, physics courses and more. 5Easy To Use: This sun height measurer school teaching tool is very simple to use, all you need is is to be screwed to its base to keep it balanced.