The Hobbs doesn’t slowly move...the transition from .3 to .4 takes less than a minute, so by the rounding rules you probably learned in grade school, 3 5/6 will round up to 4.
If the Hobbs is counting normal hours, and it only counts in tenths of hours...shouldn't it take some 6 minutes to fully change? Or doesn't it work that way? (The other option is to log it as 3387 hours and 3.29 minutes or something. )
When I was learning to fly, the rule was, "If you can see any part of the next number, that's the one you use."
I log .03 all the time, as engine maintaince. keeps the time straight, keeps the renter from paying for that time.
Buy yourself a plane and remove any such time recording device. Then use you watch or not to record flight time..
Curious why @Ryanb cares. You only pay for fuel. So what does the fuel pump say? If it's for the logbook just round up to the nearest hour.
That was the ‘rule’ at a large flying club, Plus One Flyers in San Diego. Easily enforced in the Camera in your phone era
The changeover takes less than a minute...if you’re in transition like the one shown, you’re probably 5:45 into the tenth.
Oh, I get it. Duh! Thanks! I guess I was thinking it just was always moving a little bit (probably because that is what my car odometer does).
