<prompt> Umfundi wezibalo kanye nesazi sezinkanyezi uTheodosius waseBithynia, ngokwesibonelo, kuthiwa wasungula iwashi elisebenza ngelanga elalinembile noma kuphi eMhlabeni, yize kuncane okwaziwayo ngalo. Abanye babhala ngewashi elisebenza ngelanga ezibalweni nasezincwadini zaleso sikhathi. UMarcus Vitruvius Pollio, umbhali waseRoma we-De Architectura, wabhala ngezibalo zama-gnomons, noma ama-sundial blades. Ngesikhathi sokubusa koMbusi u-Augustus, amaRoma akha iwashi elisebenza ngelanga elikhulu kunawo wonke ake akhiwa, i-Solarium Augusti. Iwashi lalo elisebenza ngelanga kwakuyi-obelisk yase-Heliopolis. Ngokufanayo, i-obelisk yase-Campus Martius yasetshenziswa njengewashi elisebenza ngelanga lika-Augustus.  <response>: isazi sezibalo nesazi sezinkanyezi 