Factory Temp Gauge Range

[mad accountant]

Anybody know the temp at which the factory gauge was calibrated to read "H"? Gauge is from a 69 smallblock car if it matters.

 

[RealWing]

Anybody know the temp at which the factory gauge was calibrated to read "H"? Gauge is from a 69 smallblock car if it matters.

A couple of my senders have 250 stamped on one side of the hex, so I've assumed that means 250 Deg F is the full scale reading. That would correspond to 10 ohms input to the gauge.

 

[RedFish]

A couple of my senders have 250 stamped on one side of the hex, so I've assumed that means 250 Deg F is the full scale reading. That would correspond to 10 ohms input to the gauge.

correct 10 ohms is 250 F