sentences:  The issues in providing such sketch maps for comparison purposes are highlighted in Trickett's sketch map copy of "Illa Do Magna", which he compares to a rough sketch map of New Zealand's North Island.Richardson adds that the lack of scale used in "Beyond Capricorn"'s sketch maps causes the reader "to fail to realise that [Trickett’s adjusted] 'Wilsons Promontory' is some 17 degrees, nearly 2,000 kilometres, south of the real Wilsons Promontory.