Larry R wrote:
Ok, I am *almost* embarrased to ask this question, but here goes. Do
Hobbs meters ever "go bad"?

B A R R Y wrote:
Sure, it's a mechanical device.
On two occasions over the last few years, my Hobbs has failed to move.
For this reason, I always note my tach time and time off. The extra
start numbers will help just in case I don't notice for a while that the
Hobbs isn't running, and I need to have a fuel consumption figure.


I am a renter, so I have made a 5x8 index card to record the following
for each flight:
Date
Aircraft N-number
Departure Airport
Destination Airport
Left Main Fuel Tank Start/Stop
Right Main Fuel Tank Start/Stop
Left Tip Fuel Tank Start/Stop
Right Tip Fuel Tank Start/Stop
Hobbs Start/Stop
Tach Start/Stop
Clock Start/Stop
Clock Wheels Off/Wheels On