Ride height
"Manual says it is 1 5/8", obtained by subtracting low point of ball joint to floor from low point of adjusting blade to floor."
Measure lower balljoint to floor
Measure adjusting "blade" ? perhaps bolt? to floor.
Substract both measurements to get at the ride-height number the manual mentions.
All said and done, just set the ride-height the way you like it and adjust the wheel-alignment accordingly.