Measure the height of the adjuster bolt to the anchor in the control arm, or count the number of threads showing. Should get you close to the same setting.
Good advice so far here. I always measure from the center of the front wheel opening to the ground, so I can set the ride height on reassembly. I always drive around the block between changes to let the suspension settle before remeasuring.
Also, take pictures before and during disassembly, and don't turn the adjuster screws with the car's weight on the suspension.
