Although it was probably the most precisely figured mirror ever made, with variations from the prescribed curve of only 10 nanometers, at the perimeter it was too flat by about 2,200 nanometers (2.2 micrometres).. 
Ó sì kópa nínú sí iṣẹ́Nunibínú ìjọba Róòmù sí àwọn Kristẹni àkọ́kọ́, ní Jerusalẹmu kí ó tó di pé ó di ẹni ìgbàlà.. 