Originally Posted by bearisgray

Another one of those "duh" insights for me.

I need to think of replacing the no longer straight rulers in the same category as replacing a dull rotary blade. When something is used a lot, it tends to become worn out and no longer does the job it is supposed to.

PS - Please do not donate those rulers - where some newbie will think she/he is getting a bargain - and is just buying frustration and inaccuracy!.