Gilashin Layin Gilashi na 6, Dia. 50mm

Saitin ya ƙunshi nau'ikan nau'ikan tabarau masu mahimmanci guda shida., Ya haɗa da ɗayan kowane mai zuwa: plano -concave, convex-concave, double concave, concave-convex, plano-convex, and convex double. ? Gilashin ruwan tabarau kusan 50-mm ne.