Probably not. Hobby servos are not precision devices.
Thanks for the feedback. To give you an idea, I am trying to make sure my plotter writes reasonably well on college-ruled-lines paper (7mm spacing). The two arms are 6" long each. Can you please suggest a servo (reasonably priced, may be <$30) that would do this job and work with the Arduino Uno? The servo rotation would have to be 180 deg.
Thanks.