Ko nga Rahinga Karāhe o te 6, Dia. 50mm
E ono nga momo tirohanga tino nui kei roto i te huinga., Kei tetahi o ia e whai ake nei: mahere -concave, convex-concave, double concave, concave-convex, plano-convex, me double convex. ? Ko te diameter diameter he 50-mm te tata.
Tuhia to korero ki konei ka tuku mai ki a maatau