The Extension Measuring System is used to study low-modulus materials such as thin films and fibers. Includes a fixture which provides flat parallel clamping surfaces, and a fixture which uses fiber pins and is especially suited for single filament samples. This measuring system is shipped in an attractive wooden case and also includes mounting hardware, 100 fiber pins, and instructions. Used on high-temperature furnace only, it is compatible with the TMA 7 and DMA 7 analyzers.