An awesome thing. An aptitude test is used to predict your ability to learn particular skills or material. It can be very helpful in helping to determine future career paths. When I was in high school an aptitude test indicated that I would be good as psychologist or a college professor. Lo and behold, I am a psychiatrist & I have done a lot of teaching. I believe an aptitude test is a powerful tool.
What? What is from an aptitude test?
Not sure. A ruler wouldn't help with spatial ability.
Unlikely. Not from canada but it's unlikely this would even help.