Youngs Modulus Supplementary Set, 12 Flat Bars Made Of Steel (Thickness: 2 / 3 mm), 6 Flat Bars Made Of Aluminium (Thickness: 3 mm), With The Effective Lengths Of 200, 300 And 400 mm And The Widths Of 10 And 20 mm For Measurement Of Elastic Deformation.
Double Convex Lens, Highly polished, optically true lens is excellent for physics classroom demonstrations in optics and light refraction, with ground edges, great for physics classrooms, with highest grade, Size: 200 mm focal length, Lens measures 2in diameter, 0.2 weight