

_Counterweights
The main weight on the Omega is fixed as closely as possibly to the bearings to reduce the polar moment of inertia. This helps makes it a medium effective mass arm.
Cartridges can vary in mass from 5g to 23g so we need to supply a minor counterweight
which is fitted below the centre of gravity of the arm-
The standard weight balances cartridges from 7g to 12g, however, we also manufacture a range of weights of the same shape, but with different thickness’s to accommodate the more unusual cartridges outside this range.
In the case of the ultra-