Yup – same as the one I checked today.
Thanks again for your trouble gentlemen. So to be totally retentive, I take it that the Spinner cone is 24″ long with a Dia of 24″. Inclusive of backplate measured on two examples. It’s interesting that Paul Monforton’s book, based on three different surviving Spitfires, gives 25.823 inches length on page 2.30. Page 2.39 gives 25.45 for a rather blunter-tipped example. Diameter at base is 25 inches. This latter info relayed via Graham Boak.
John