GSC International SCRD-CS Refraction Tank, Semi-Circular, for Science Education. Case of 100.

This semi-circular refraction tank has a printed protractor on it to observe and measure refraction. This is a great demonstration for a physical science class. An instructions guide is included. Sold in a Case of 100. Use a laser to shine though the tank and determine refraction Help students to understand Snell's Law in a fun visual demonstration