Show but four indoor wind dials known to exist A curious instrument dating f from the century is the indoor wind dial a large dial marked with the 32 points of the compass and installed usually over a fireplace says colliers it indicates the direction of the wind by means of a pointer connected with a wind vane on the roof of the four still known to exist three are in london one each in kensington palace the admiralty and the british museum and the fourth is in the st magnus monastery in fussen aussen germany |