How to input a finger oval measurement ( no inserts)

1. Find the right drill bit for both fingers at the measurement
2. When it's found , register on " Hole Size" located on the Spec sheet 
3. EX: 

   

   

   

   

4. Next step is to find the oval width . When the size is selected , then calculate the difference in millimeter  between your finger drill bit and the oval width 
5. Exemple : ring finger you found size 39/64 ( 0.609) - 35/64 ( 0.578)   = 0.031 
6. Wrote the difference in the "Oval" section located on the spec sheet then press check button to confirm .
7. EX:

   

   

   

   For the Middle finger the process is exactly the same as the ring finger by determined  the oval width and making the difference from the drill bit .
   

    

   Exemple : oval width 5/8 ( 0.625)      then 5/8 (0.625) - 37/64 ( 0.578) =0.047