Kukhazikitsa magalasi athu osinthika a Square Frame Optical, kuphatikiza kwabwino kwa magwiridwe antchito ndi masitayelo omwe mosakayikira angakope chidwi cha anthu amakono.Magalasi awa ali ndi mawonekedwe oyera komanso owoneka bwino a square frame omwe amawonetsa kukhazikika kosatha, kuwapangitsa kukhala chowonjezera chambiri nthawi iliyonse.