Write secret messages to your friends in the know, keep diary entries safe from prying eyes with light-coded messages, and leave invisible tags in school notebooks with this handy and affordable invisible ink pen! The pen casing is filled with invisible ink, and the thin felt tip allows you to create detailed images and messages. The pen cap contains a small UV light that allows you to reveal your messages for yourself, and to trusted confidantes. Buy a few for your friends and commence a covert correspondence or start a secret society! Makes an excellent party favor or stocking stuffer.
NOTE: This pen comes in assorted colors - depending on our current stock.
This 1mW, 532nm Super Safe Green Laser Pointer is for education, government or other settings where safety is a concern.
A massive mounted set of 100 rocks and minerals found in the US,
Explore the invisible and amazing power of magnets with 33 engaging experiments and games.
This smaller transportable Van de Graaff Generator will easily fit in any classroom!
Discover how solar cells make electricity with this awesome kit!
This high precision gyroscope will amaze you with rotational speed and ease of precision.