A Flow meter determines volume.
An entered specific gravity figure and a fuel temp measurement allows for a volume/weight calculation in the software.

Fuel flow is displayed in lbs/hr(I’ve never looked, but you can probably display it another way if using WinDyn software)...... bsfc is calculated from observed uncorrected hp and measured fuel flow.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads