If you got a tattoo of a ruler, would it stay accurate forever?
I am considering a tattoo with an amalgam of useful knowledge contained within it. This indelible info might come in handy at MacGyver-esque moments. One useful feature of such a tattoo would be a ruler.
This handy measurement tool would be useless if inaccurate, so do tattoos change significantly enough to make a tattoo ruler useless?
This question is in the General Section. Responses must be helpful and on-topic.