See attached pic for measurement help. To adjust the angle, one loosens the bolthead on the bottom, the top screw-end of which screws into the SGC clips. Align to the desired angle, and tighten again.
I vaguely recall the Vark + SGC clips + MKx caps with active cables doesn't provide
precisely ORTF/DIN/DINA, but it's mighty close. Alright, so I decided to measure. Vark + SGC + MK5 caps with actives does: DINA, ORTF (within a few millimeters), XY (within a couple millimeters depending on the angle one uses), Mid-Side (within a couple millimeters), and Blumlein, all with flexibility in the included angle between mics. Of course, modifying the included angle, and using different length MK caps will impact the spacing distance slightly. At any rate, for me, lack of DIN and spacing off by a few millimeters in a couple cases is worth it for the light weight, small footprint, and flexibility/capability of setting the included angle.
To learn more about the impact of spacing and included angle (and why ability to change the included angle is so useful), check out
Michael Williams' "The Stereophonic Zoom" (hosted on the Rycote site).