![Two pressure balances as a mass comparator diagram.](http://static.sciencelearn.org.nz/images/images/000/002/278/full/Two-pressure-balances-as-a-mass-comparator20161028-31589-1ubq5qf.jpg?1674167925)
Two pressure balances arranged so that they can be used as a very precise mass comparator. This eliminates some of the difficulties encountered with conventional watt balances.
Two pressure balances arranged so that they can be used as a very precise mass comparator. This eliminates some of the difficulties encountered with conventional watt balances.