Found - a handy little book Point It Out: The Picture Speech For All Nations by one Walter Sefton. It was published 'by authority of the War Office Welfare Department' (Leicester, 1944.) The title page notes that the book was '…designed to make help all men and women of the Allied Services in making their needs easily understood in foreign countries - a guide and comfort and friend when in any difficulty.' This type of book is still published (The Wordless Travel Book and the Point it Traveller's Language Kit),and there may even be an app - although now people probably just find an image on their phones and show it to a helpful foreigner..
The page shown is for use on board a steamship, possibly to answer requests such as 'Where is my car?' and 'Can I smoke in the bar?' 'I need a rug for sitting on the deck chair' and 'Where is the ship's library?'
