Re: drum dial
I really believe that Drum Dials and Tunebots are a waste of time and money, I tried both of them because I thought that one of them might shave some time tuning and re-heading the close to 40 drums I have. In my experienced they take longer to "attempt" to tune a drum with some very inconsistent results. At the end of the process you still need accurate ears, depending on how accurate you want to be, to complete the task. You would be better served by following the expert advice from a competent drum instructor on how to tune your drums. One on one personal instruction is miles better than any mechanical tuning device. If you're completely out in left field when it comes to tuning and you don't have a teacher within a close proximity of your home, then use the many Your tube on line videos or just do what you must.
Just my experienced opinions.