Getting the measure of Murdoch's Good

I offer a reading of Murdoch's conception of concrete universality as it appears in 'The Idea of Perfection', the first essay in the Sovereignty of Good. I show that it has British Idealist overtones that are inflected by Wittgenstein, a thought I try to illuminate by drawing an analogy with Wittgenstein's discussion of the metre stick in Paris in Philosophical Investigations §50. In the last part of the paper, I appeal to the work of Murdoch's erstwhile tutor Donald MacKinnon to respond to an objection to my strategy, which I draw from Murdoch's later work, Metaphysics as a Guide to Morals.