This is a single-storey thatched building.  The structure is present on the 1st edition Ordnance Survey of 1868, but is shown on old photographs from the latter half of the 19th century in a dilapidated condition.  It was repaired and re-roofed with a single pitch corrugated iron covering early in the 20th century, but following acquisition by the Manx Museum and National Trust the gables were raised to create a ridge and the resulting new roof structure was thatched.  Since 1946 the building has housed a woodturner's treadle lathe is used to demonstrate tradtional craftsmanship.