So, if you have a meter stick with tickmarks every mm (millimeter), you can measure a length with it to an accuracy of about 0.5 mm.
(you; have; a meter stick) (you; can measure; a length with it; to an accuracy of about 0.5 mm; T:every mm)
you you
have can measure
a meter stick
a length with it to an accuracy of about 0.5 mm T:every mm