Lead Free Solder with Easy Pen Dispenser, Single, Cheap solder ruins irons, destroys projects and makes smoke billow from our ears, affordable, flows melts beautifully, best dispenser, saves a lot of solder, No longer break off sections
Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied.