I use the Tama Tension watch, I find it invaluable. I can and do tune by ear but the Tension watch gets me into the main tuning range much much quicker, Also I have and play multiple kits, I always de tune all my drums when not in use. The tension watch is a big time time saver I've used this one for over 12 years so I know what range to go automatically with it. To make a point forum member Kevins and I would be tuning drums I would tell him I knew just from the tension from my drum key what torque range I was in he would check it with the tension watch and to his surprise I would be spot on. Just making a point that from doing it so long it's automatic, I am also a hard player, during our break I can go over the drums without striking them as to interrupt the crowd hitting the drums to hear each T rod. etc, I also play Guitar and Bass Guitar and an electric tuning device is used by literally every player. pros included.
Well put! The drum dial or the tension watch gets you to the starting point, Or the final, 10 times faster. The drum dial also has a cheat sheet inside that you can use for different size drums, and a chart on back to record your settings for each drum and each kit. Which is worth it's wt. in gold when you use multiple kits and different style heads. To top it off I use a Planet Waves Full-Function Tuner & Metronome that works almost too good, and can enable even a novice to get studio quality tuning on each drum and quickly. The PW tuner will get you to either the pitch of the shell, or to a specific note, or anywhere in between. Then between sets, you can adjust with the dial if need be without making a sound. If the technology is available, why not use it? Rather work smarter than harder...