Ammeters; Galvanometers; Magnets; Steelyards; Voltmeters; Balances; Battery cases; Coils, electric; Educational apparatus, namely, blocks used as teaching aids for modeling chemical compounds, visualization of math concepts; Electromagnetic coils; Electronic warning bells; Laboratory apparatus and instruments, namely, homogenizers; Laboratory chemical reactors; Lever scales; Measuring rulers; Optical lenses; Safety goggles; Wires, electric