For that perfect PSI, I thought it would be a good idea to purchase this digital pressure gauge when riding gravel. I don't know how accurate it is, but it's been great so far. Simplistic, lightweight, and aesthetically pleasing.
Great gauge for dialing in the lower pressures that make tubeless conversions work to your favor. I like that it has .5 lb. increments for more precision. The audible beep and backlight are nice features too. My only complaint is that the reading isn't updated when using the pressure release button, you have to remove and re-engage for the updated pressure. Otherwise, I would have given this gauge five stars.