I use this constantly and have for 5 years for immediate progress check since you don't have to get a 5 star erection to check out where you are. You can occasionally do a conversion since as stretched dick gets longer, the erect length lags a bit further and further behind as you would expect. I have always been gratified to check every single day with a straight out stretch on flaccid dick to see where on ruler I hit and you will see it slowly but surely creep up, take a long time but when you hit a milepost on the stretched length then it is time for a steak dinner because you absolutely know that your erect dick is now longer by some measurable distance. I can stretch mine now to right below 13 inches and that translates about to 10.75, but I don't fret the big difference -- I will know when I hit 13.5 in my daily stretch measurement during the exercises that I count on being a solid 11 inches. This daily measure helped keep me motivated for my last every day for 5 year routine and increase from 6 to over 10.5 just like DLD