Hi Alexei, hi all, I think that an other problem of a large sundial, is the accuracy of the shadow. Will the shadow be sufficiently "sharp" ?
Good luck and sunny skies ! Alain MORY 48°N7°E "alexei.pace" a écrit : > > Hi all > > I would like to know what problems may be anticipated in the construction > of a large (4m x 4m) vertical sundial ? > I believe any errors in the calculation of the wall's declination will be > magnified by having a large dial? > would it be wise thus to use analemmas to derive the civil time/ ? > > Is a normal triangular gnomon good? In this case it has to project around > 60cm out from a limestone wall. > > thanks for your input > > Alexei
