I don't know if I'll be much help here is my two cents worth.

I don't think that DMIS will allow the construction of a cone from two circles. It will allow the construction from at least 6 points.

A cone is measured in MODE/PROG,MAN mode, Auto mode does not seem to be legal as there is no way to specify depth.

So, I would suggest that you turn learn mode on, probe the apex of the cylinder with 4 points, move to the base of the cone and probe 4 points. Turn learn off. Open the text editor and look at the DMIS definition of the cone. It should look something like-

F(Cone1)=Feat/cone,INNER,CART,X,Y,Z,I,J,K,ANG
MEAS/CONE,F(CONE1),8
PTMEAS,CART,X,Y,Z,I,J,K
PTMEAS,CART,X,Y,Z,I,J,K
PTMEAS,CART,X,Y,Z,I,J,K
PTMEAS,CART,X,Y,Z,I,J,K
PTMEAS,CART,X,Y,Z,I,J,K
PTMEAS,CART,X,Y,Z,I,J,K
PTMEAS,CART,X,Y,Z,I,J,K
PTMEAS,CART,X,Y,Z,I,J,K
ENDMES

Where XYZ is the location of the apex of the cone. IJK is the vector along the axis of the cone and ANG is the included angle of the cone. You can edit these to what ever nominals you want. Edit the PTMEAS statements to reflect the XYZ locations of the points you want to take. Be sure to check that the IJK values are correct so that your probe comp is right.

Check the Virtual Dmis manual and call the virtual dmis tech support for more details.

Good Luck,

Bob Connors
Lawrence Berkeley National Lab