KidWind Blade Pitch Protractor, incredibly helpful for measuring the blade pitch angle on your KidWind turbine, Recommended for College, High School, and Middle School Science
Microscope Digital compound, Super high contrast(ASC) objectives, 4x,10x, 40xR, 100xR, Coaxial focusing. LED illumination, rackless stage, 1.25 Abbe Condenser, 3.0MP built-in digital camera
Compound bar, Copper and Iron, Weight (lb): 5.8,Length (in): 15.7,Width (in): 12.6,Height (in): 3.1, Comprising a bar of copper and iron each 200 x 15 mm, riveted together, For demonstrating the differential expansion of two metals