unknowndrawing (visual work)rubbing (visual work)type registration: top termcast (light unknown)cast (flash light)cast (symmettrical light)cast (raking light from above)cast (raking light from below)cast (raking light from the left)cast (raking light from the right)photograph (light unknown)photograph (flash light)photograph (raking light from above)photograph (raking light from below)photograph (raking light from the left)reflectance transformation imagingcast (guide term)photograph (guide term)observationphotograph (raking light from the right)photograph (without flash light)photograph with digital microscope (polarized light)photograph with digital microscope (unpolarized light)photograph with digital microscope (raking light from above)photograph with digital microscope (raking light from the left)photograph with digital microscope (raking light from below)photograph with digital microscope (raking light from the right)photograph with digital microscope (polarized light, measurements)photograph with digital microscope (unpolarized light, measurements)photograph with digital microscopephotograph (UV light)beschouwervisual inspectionwaarnemingfrottageRTIphoto (with indication of position mark)photo (with indication of direction mark and/or dimensions)