Hand Boiler

Intriguing toy/ token Glass tubing contains a special volatile liquid that boils at just above room temperature the warmth of your hand will make it boil It's a mercury compound so toxic and corrosive when released DON'T break the glass or spill the liquid You cup the bottom bulb and in a few seconds the liquid boils up through the tubes; cup the top bulb and it boils back down again defying gravity Not really it's now a gas under pressure. This science toy had a lifetime as a "love meter" you demonstrate the warmth of your love Comes in several colours Very light box 16cm tall Tubing is glass so fragile View see image.