Product dimension (L*W*H CM): 26.1*12.1*15.4
Inner packs dimension (L*W*H CM): 28.1*21.5*18.2

It is used to do optical demonstration experiment of natural science course in primary school; it can do experiments, such as: light straight-line propagation, pinhole imaging, reflection and refraction of light, convergence and divergence of lens and amplification effect of convex lens.