Once you have some curves, you’ve dragged them to the right proportions and you’ve added geometric constraints then you can add dimensions – Dimensional Constraints.

LMB to select the geometry to dimension, MMB to place the dimension.  Place the dimension with MMB in the position you would draw the dimension on paper.

LMB to pick a line, MMB to dimension the length of that line

LMB to pick 2 parallel lines, MMB to dimension the distance between the lines

LMB to pick 2 non parallel lines, MMB to dimension the angle between those lines

LMB to pick an arc, MMB to dimension the arc radius

DO NOT dimension a circle with a radius

LMB to pick a circle, LMB to pick the circle again, MMB to dimension the circle diameter

 

LMB to pick two points or centres, MMB to dimension the horizontal, vertical or slanted distance between those points

 

Useful dimensions:

Select a chain of lines, curves, etc to create a perimeter

Select an existing dimension to vary to accomodate changes to the perimeter

 

Arc length: LMB – arc endpoint, arc endpoint, arc.    MMB to place dimn.  As below:

 

G2 curvature continuity relation from spline to line/arc