How to measure - My ratio is 1.2 (Off the scale female) Raina try to measure this way. When I tried to eyeball my finger length I thought they were almost the same. But using this method I really was able to see the difference. Again - Image shows the measurement procedure of dorsal digit length using vernier calipers. The hand is placed on the edge of a table so that fingers are rested on table while making an angle of 90 degrees to the palm.