A process for making Type 60 Nitinol with shape memory effect from hot-worked material, such as hot rolled Type 60 Nitinol sheet or plate, includes heat treatment to a temperature of 600 C. The preferred embodiment of this invention is one in which the viewing axis and the device axis are not collinear or coaxial, the specimen is illuminated with oblique or dark field illumination, the method of transmitting the light is through a light pipe, and one or more lenses are hybrid lenses. The magnesium aluminosilicate clay is the product of a series of specific reaction steps.