1. A method for measuring a feature of an object, the method comprising: taking a representation of at least the feature on the object comprising multiple data points acquired via surface measurement of at least the feature; fitting a model substantially replicating at least the feature of the object to the representation, the model comprising parameters defining at least two independently alterable portions that are linked at a common point, said fitting comprising changing the form of the model by altering at least one of the at least two independently alterable portions; and obtaining information regarding at least the feature from the fitted model.