Description
This Green BNL Refractor is an heavy duty metal, has large sets of spherical and cylindrical lenses, auxiliary cells, rotary prisms, and Jackson cross cylinders. As well as allows fast switching of lens power.
This Green BNL Refractor is an heavy duty metal, has large sets of spherical and cylindrical lenses, auxiliary cells, rotary prisms, and Jackson cross cylinders. As well as allows fast switching of lens power.
