▁c ros st rees ▁are ▁of ▁o ak , ▁the ▁upper ▁being ▁ ▁long ▁and ▁ ▁in ▁section , ▁whilst ▁the ▁lower ▁c ros st ree ▁is ▁ 1 2 ▁by ▁ 1 1 ▁in ▁( 3 0 5 ▁by ▁ 2 9 2   mm ) ▁at ▁the ▁ends , ▁thick ening ▁to ▁ ▁at ▁the ▁centre . ▁The ▁post ▁is ▁ ▁long , ▁and ▁ ▁square ▁at ▁its ▁base . ▁ ▁Body ▁ ▁The ▁body ▁of ▁the ▁mill ▁measures ▁ 1 9   ft ▁ 1 0 ▁in ▁by ▁ 1 1   ft ▁( 6 . 0 5 ▁by ▁ 3 . 3 5 ▁m ) ▁in ▁plan . ▁At ▁some ▁point , ▁the ▁body ▁of ▁the ▁mill ▁had ▁been ▁extended ▁at ▁the ▁back ▁to ▁provide ▁room ▁for ▁a ▁bol ter . ▁It ▁was ▁originally ▁only ▁ ▁long . ▁The ▁crown ▁tree ▁is ▁ ▁square ▁at ▁the ▁ends , ▁thick ening ▁to ▁▁ ▁at ▁the ▁centre . ▁The ▁side ▁gir ts ▁are ▁ ▁by ▁ ▁in ▁section . ▁ ▁S ails ▁and ▁wind sh aft ▁The ▁wind sh aft ▁is ▁of ▁wood ▁with ▁a ▁cast ▁iron ▁poll ▁end , ▁probably ▁fitted ▁at ▁the ▁same ▁time ▁that ▁the ▁Pat ent ▁s ails ▁were ▁added . ▁The ▁mill ▁would ▁originally ▁have ▁been ▁built ▁with ▁common ▁s ails . ▁ ▁Mach in ery ▁The ▁cl asp ▁arm ▁wooden ▁head ▁wheel ▁was ▁converted ▁from ▁Com pass ▁arm ▁construction , ▁it ▁is ▁ ▁diameter . ▁The ▁wooden ▁tail ▁wheel ▁has ▁also ▁been ▁similarly ▁converted ,