As with the over and under, big boy and universal big boy scribers you can flip the body of the 2 in 1 scriber 180 degrees so the marking tool is above the pivot point.
This gives you 6 different angles the marking tool can be presented to the work piece.
You then have further adjustment in all 6 positions by pivoting the scriber body.
When using the marking wheel holder the aim is to get the face of the marking wheel as near as possible to a right angle with the work piece.
You need to swap over to a cap head bolt when the body is flipped as the knurled tightening knob would catch on the cradle of the scriber.
A suitable bolt is provided with the scriber along with an allen wrench.