This helps user to measure
shortest 3D distance between two points on the model. Annotation
labels with measured value will be attached to the dimension lines.
Note:
 Font and sizes of measurement labels can be
modified using Label
Settings dialog.
3D Distance

Linear Distance Measurement 
3 Point Arc

Arc Measurement 
Snap Vertex 
Helps user to select the vertex
nearest to clicked point.

Vertex Info. 
Allows user to view
x, y, z coordinates while moving the mouse over the
model. 
User can measure linear distance in the following
ways,
 Point to Point : Measures distance
between two user picked points.
 Point to Edge: Measures shortest
distance between point and the edge picked by user.
 Point to Face: Measures shortest
distance between point and triangle picked by user.
Linear Distance Measurement
 Click Tools 
Measure  3D Distance option.

Click 2 points of interest on the model to measure the
distance.

The points clicked are highlighted in red color and a
line is drawn between the end points

An annotated label with distance value is attached
to the middle point of line drawn.
How to measure distance between point and an edge?

Click 'Tools  Measurements 
Point to Edge'.

Click a point on a model and
click on a model for closest triangle edge.

The point and the closest edge will be highlighted in
red color. Edge is extended if foot of perpendicular does not
lie in the edge segment.

An annotated label with distance value is attached to
the middle point of line drawn.
How to measure distance between point
and a face?

Click 'Tools  Measurements 
Point to Face'.

Click a point on a model and
click on a model triangle.

The point and triangle points will be highlighted in red
color.

An annotated label with distance value is attached to
the middle point of line drawn.
Arc Measurement
 Click Tools 
Measurements  3PointArc option.

Click on 3 points of interest to create Arc

An arc is drawn from start point to end point passing
through the second point.

All three points are highlighted in red color.

An arrow is drawn from center of arc to the curve to
denote the radius.

An annotated label with arc information is attached to
the center of arc.

Curve hidden behind the model is drawn with dashed
lines.
Snap Vertex

This
enables user to select a nearest vertex of model through
mouse click while measuring distance or an arc.

User
can use Snap Vertex option to assure that the arc computed and drawn
is passing through actual arc points of model.

Click Tools Measurements
 Snap Vertex to enable this option.
Below is the snap shot
of same arc measurement above with snap vertex enabled.
Vertex Info

When
this option is selected, user can see a label with the
X, Y, Z coordinates of an existing vertex, as user moves
the mouse over the model.

It helps user to know position of parts by
its nodal coordinate
values.

Section:
User can define a custom section plane
through three known coordinate points.

Measurement:
User is able to know the shortest
distance between two nodes rather than two points.
User is able to compute an arc passing
through three exact nodes.