intake weight

I have a cast 4bbl iron manifold. And the RPM airgap. I'll weigh them up.

Stock T-Q bbl, '79 vintage, 51.5 lbs
Edelbrock RPM Air-Gap, 19 lbs
Edelbrock TorkerII, 17 lbs

Switch to RPM weight savings, 32.5 lbs All manifolds have a thermostat and housing installed as well as other hardware like carb studs, pipe fittings and plugs. So it's close, not exact manifold weight, but it's real world weight.
The scale is one you stand on. Accurate????? Close enuff.