Fitting corner bath

[Gaz the Cab]

I fitted the toilet last week with no problems, I now have the bath and vanity basin to fit.
The one I am concerned about is the bath, it is a 1500 x 1500 it is supplied with 4 wall brackets (I understand their purpose and usage), the leg pack, however, is a different matter, it consists of 2 lengths of steel/metal 1 x 600 and 1 x 730 which the legs attach to, these all in turn are screwed to 2 reinforced sections on the underside of the bath. So far so good.
The question is, how do I determine the correct positioning of the legs.
Thanks for any assistance in advance.

 

[meldrew's_mate]

My usual way is to locate each bracket across the bath section 2/9ths from each end, so if the bathing tub is 1700mm long measure 377mm from each end for the brackets