Mole in a beaker with Avogadro's constant Enamel Pin Badge

If you love Chemistry and want everyone to know before you even open your mouth, then this is the pin for you! An adorable mole standing in a beaker with Avogadro's constant underneath.
A geeky pun, since the Avogadro constant is the number of particles (usually atoms or molecules) in one mole of a given substance.

The hard enamel pin is 2.7cm high, 1.6cm wide and has a black rubber clutch. The pin is delivered in an Engineering Designs branded pouch. Ready to be gifted or as a treat for yourself.