▁A ▁quarter ▁chain , ▁or ▁ 2 5 ▁links , ▁measures ▁ ▁and ▁ ▁thus ▁measures ▁a ▁rod ▁( or ▁pole ). ▁Ten ▁ch ains ▁measure ▁a ▁f url ong ▁and ▁ 8 0 ▁ch ains ▁measure ▁a ▁stat ute ▁mile . ▁ ▁G unter ' s ▁chain ▁recon ci led ▁two ▁seem ingly ▁in compatible ▁systems : ▁the ▁traditional ▁English ▁land ▁measurements , ▁based ▁on ▁the ▁number ▁four , ▁and ▁dec im als ▁based ▁on ▁the ▁number ▁ 1 0 . ▁Since ▁an ▁a cre ▁measured ▁ 1 0 ▁square ▁ch ains ▁( or ▁ 1 0 0 , 0 0 0 ▁square ▁links ) ▁in ▁G unter ' s ▁system , ▁the ▁entire ▁process ▁of ▁land ▁measurement ▁could ▁be ▁computed ▁using ▁measurements ▁in ▁links , ▁and ▁then ▁converted ▁to ▁acres ▁by ▁div iding ▁the ▁results ▁by ▁ 1 0 0 , 0 0 0 . ▁ ▁Method ▁ ▁The ▁method ▁of ▁surve ying ▁a ▁field ▁or ▁other ▁par cel ▁of ▁land ▁with ▁G unter ' s ▁chain ▁is ▁to ▁first ▁determine ▁corners ▁and ▁other ▁significant ▁locations , ▁and ▁then ▁to ▁measure ▁the ▁distance ▁between ▁them , ▁taking ▁two ▁points ▁at ▁a ▁time . ▁The ▁survey or ▁is ▁assist ed ▁by ▁a ▁chain man . ▁A ▁r anging ▁rod ▁( us ually ▁a ▁prom in ently ▁col oured ▁wooden ▁pole ) ▁is ▁placed ▁in ▁the ▁ground ▁at ▁the ▁destination ▁point . ▁Starting ▁at ▁the ▁origin ating ▁point ▁the ▁chain ▁is ▁laid ▁out ▁towards ▁the ▁r anging ▁rod , ▁and ▁the ▁survey or