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
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
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
Inductor, made from 20 gauge copper wire. It has an inductance of 5 mH and low resistance. A metal core can be added to increase inductance, The ends of the coil wire are exposed so that you can easily make connections to the Circuit Board or to