ds , ▁with ▁the ▁index ▁rod ▁on ▁the ▁left ▁den oting ▁the ▁divis or , ▁and ▁the ▁following ▁ro ds ▁sp elling ▁out ▁the ▁digits ▁of ▁the ▁divid end . ▁After ▁these , ▁a ▁special ▁" rem ain der " ▁rod ▁is ▁placed ▁on ▁the ▁right . ▁The ▁quot ient ▁is ▁read ▁from ▁left ▁to ▁right , ▁following ▁the ▁lines ▁from ▁one ▁rod ▁to ▁the ▁next . ▁The ▁path ▁of ▁digits ▁ends ▁with ▁a ▁number ▁on ▁the ▁remainder ▁rod , ▁which ▁is ▁the ▁remainder ▁given ▁by ▁the ▁division . ▁ ▁Resources ▁ ▁See ▁also ▁▁ ▁Nap ier ' s ▁b ones ▁ ▁S lide ▁rule ▁ ▁References ▁ ▁External ▁links ▁ ▁History ▁of ▁computers ▁and ▁computing : ▁Nap ier ' s ▁b ones . ▁ ▁Descri bes ▁the ▁use ▁of ▁Gen aille – L uc as ▁r ul ers . ▁ ▁Category : Me chan ical ▁calcul ators ▁Category : Mult ip lication <0x0A> </s> ▁W id mer pool ▁Hall ▁is ▁a ▁Gra de ▁II ▁listed ▁English ▁country ▁house ▁in ▁W id mer pool , ▁Not ting ham shire . ▁ ▁Situ ated ▁on ▁the ▁north ▁side ▁of ▁the ▁village , ▁it ▁was ▁built ▁in ▁ 1 8 7 2 ▁for ▁Major ▁George ▁Co ke ▁Robert son ▁to ▁the ▁designs ▁of ▁Henry ▁Cl utton . ▁This ▁ne o ▁Goth ic ▁man or ▁house ▁was ▁constructed ▁of ▁Bath ▁and ▁C li ps ham ▁stone ▁and ▁has ▁an ▁Italian ate , ▁g argo yle ▁ad orn ed ▁clock - t ower ▁without ▁a ▁clock .