For an explanation of the various pieces of machinery, see Mill machinery.
Fort Green Mill is a four-storey tower mill. It had four patent sails and the domed cap was winded by a fantail. It had two pairs of millstones.[4] A photograph of the working mill (above) shows that the sails were double patents carried on a cast-iron windshaft and the fantail had six blades.
There is an inscription in Danish, formerly above one of the doors, now on a wall, "Herren skal bevare din udgang og din indgang". It means "The Lord shall preserve thy going out and thy coming in," from Psalm 121 verse 8.
References
^Regan, Dean (1997). Windmills of Suffolk. Suffolk: Dean Regan. p. 68. ISBN0-9531562-0-6.