Fix Options

Snap faces to nearest: Angularly misaligned faces will be adjusted to the snap tolerance, making it easier to put model dimensions to round numbers. The images below show an example.

Precision is set to 3 decimal places with the trailing zeroes option turned on.

Snap faces to nearest is checked On.

The top face will be straightened by rotating the right edge down and the left edge up.

Snap faces to nearest = 0.001mm

Snap faces to nearest = 0.010mm

Snap faces to nearest = 0.100mm