Measuring distance
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Measure and make a note of the distance (A)before removing the adjusting screw.
Alternatively, you could count and note the number of turns needed when unscrewing the adjusting screw from the window frame.