Absolutely love these, I cant put them down.
Awesome little thing to have on your desk.
Well made and fun.
This is a present so I have not tried it out - but I know it is just right. You may see this as scientific 'thing' or as a toy, but I see it as a work of art. Just great.
Kept the family interested for days.
#1 just a really great desk item for all ages.