
Custom made tape measure to check your draw length.
Hook it up where the pivot point of the bow grip is and measure your draw length without adding 1-3/4". The tape is made to accommodate for that measurement already.
You could also place the tape ring over your thumb and pull the tape back like you would pull the bow and it will show you the correct draw length. (require second person to read the measurement for you)
Due to manufacturing variances the tape might look different then the photo below but will still function the same.