The Constants type exposes the following members.
The error ratio used as a base for determining a good tolerance within a given tessellated solid.
The error for face in surface
The angle tolerance used in the Oriented Bounding Box calculations
The tolerance for the same normal of a face when two are dot-producted.
VertexCheckSumMultiplier is the checksum multiplier to be used for face and edge references. Since the edges connect two vertices the maximum value this can be is the square root of the max. value of a long (see above). However, during debugging, it is nice to see the digits of the vertex indices embedded in check, so when debugging, this is reducing to 1 billion instead of 3 billion. This way if you are connecting vertex 1234 with 5678, you will get a checksum = 5678000001234