Dimensioning Secrets Part 3

When dimensioning to the center of openings you can add a center line symbol and also change the line type and tick mark. On the properties of the Dimension Style you can manipulate the type of centerline symbol to use as well as the line pattern and even the type of tick mark used for center dimensions.

These changes will only apply when dimensioning to the center of objects.

Also under the dimension properties you can manipulate the how the dimension text is placed and how it is read.
Here you have a number of options for text placement.

Other properties that are worth pointing out are the Dimension Line Snap Distance where you can specify the distance between dimensions when stacking  dimensions.

Witness Line Control you can specify the gap from the object to the leader line or Fixed to Dimension Line like so...

Dimensioning Secrets Part 2

When dimensioning your model you have a few options for string type.

Continuous, Baseline and Ordinate.

These types allow you to represent the dimensions in different ways such as:

Continuous: Allows you to create a string of dimensions places consecutively one after another.

This is typically how we dimension for Architectural projects.

Baseline: Baseline dimensioning is when you start at a base point and separate dimension strings are created (automatically spaced evenly). I typically see baseline dimensioning in fabrication where you can place a tape measure at one end and mark off the distances as you go.

Ordinate: Ordinate dimensioning is similar to baseline dimensioning but instead of separate dimension strings it is one continuous string of dimensions with the dimension text places next to the leader dimensioning the object.