The 3448 Series, manufactured by Epsilon®, is a high temperature extensometer for furnances and induction heating system function that only uses a self-supporting epsilon design that includes an extensive variety of applications for testing cover options. It has an immense temperature for metals, ceramics, and composites testing in a temperature due to the furnace and induction of the heating system. It has a combined feature so that it can be simple to use but at the same time providing high performance in all temperature extensometers. Furthermore, it has a light flexible ceramic fiber cords that holds the unit to make it a self-supporting specimen. Plus, it does not need anymore of furnace brackets and it has a minimal test sample through the side load due to its self-supporting and light weight design of the sensor.