Premium LPG Bunsen Burner with Needle Valve and Flame Stabilizer Electricity & Magnetism_Electromagnetism & Motors with adjustable slit and draw-out

with adjustable slit and draw-out focusing for examining the spectral composition of light sources

Sixty-five-piece molecular model set with 32 atoms and 33 bonds for demonstrating bonding angles

Convertible motor-generator running AC or DC in shunt or series wound configurations

and gray links in a 4-compartment storage case

Premium LPG Bunsen Burner with Needle Valve and Flame Stabilizer Electricity & Magnetism_Electromagnetism & Motors with adjustable slit and draw-outNeedle valve and flame stabilizer deliver fine flame control on this liquid propane Bunsen burner for precision chemistry and biology heating work.