That's not gravity being measured. That is the effect of what we call gravity on a particular mass, registering the amount of mutual attraction using units that we came up with many years ago.
It doesn't show "gravity".
That's not gravity being measured. That is the effect of what we call gravity on a particular mass, registering the amount of mutual attraction using units that we came up with many years ago. It doesn't show "gravity". And just how is that different from any other measuring device? Show me a meter that *directly* measures electric current, for example, instead of the current's effect on something which is then used to cause an indication on the meter.