Sketch of the type of bench planned for filter measurements. The filter holder is a standard 2in square holder, and can adapt any custom-made fixture. - updated version with 12in. spheres
STL (Stereolithography, filesize: 955 KB), OBJ (OBJ, filesize: 851 KB), 3DS (3D Studio, filesize: 746 KB), FBX (Autodesk FBX, filesize: 1.25 MB), IGE (IGES, filesize: 299 Bytes), MAX (Autodesk 3ds Max, filesize: 1020 KB), SKP (Sketchup, filesize: 1.51 MB), OTHER (Other, filesize: 727 KB)