THIS CHAPTER HAS BEEN RESERVED for the remaining mea surement techniques likely to find use in a metals analysis laboratory. To be concise and to keep our focus, we will not discuss instruments or procedures for the measurement of physical properties if there is not a direct tie-in with compositional results. Thus, while measurements of refractive index, surface tension, flash point, viscosity, or coating weight may be a part of the analytical laboratory's assignment, the reader will have to look elsewhere for guidance in these areas. Similarly, the specialized fields of surface analysis and thermal analysis, as well as physical metallurgy tools such as Xray diffraction and microprobe techniques, will not be included.