Clause 50.7 states - Payments of Defined Cost made by the Contractor in a currency other than the currency of this contract are included in the amount due as payments to be made to him in the same currency. Such payments are converted to the currency of this contract in order to calculate the Fee using the exchange rates.
Do the exchange rate apply to rates provide in the contract data for equipment i.e. equipment rates stated in contract data is adjusted for exchange rates, because the supplier of equipment is foreign ? This would appear to undermine the cost certainty (the purpose) of having these rates.