Answer
56.75 mm
Work Step by Step
The first mark to the left of the 0 is:$\ \ \ \ 56\ \ \ \ \ \ $ mm
The mark that most nearly lines up is:$\underline{\ \ \ 0.75\ }$ mm
The total measurement is:$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 56.75\ $ mm