Pen with Built in Element Chart is a fantastic ballpoint pen combine with a pull out 4 color offset printed chemical element chart printed on both sides sized up to 168*68 MM. By default the barrel will be transparent, thus students can see those pens have a periodic table of elements build-in, thus, can’t help …
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February 2014
Pen with Built in Element Chart
Pen with Built in Element Chart is a fantastic ballpoint pen combine with a pull out 4 color offset printed chemical element chart printed on both sides sized up to 168*68 MM. By default the barrel will be transparent, thus students can see those pens have a periodic table of elements build-in, thus, can’t help …