The KFRP series foil strain gages are self-temperature-compensation gages (SELCOM?? gages) suitable for strain measurement of composite materials such as CFRP and GFRP. The special gage pattern minimizes the effect of self-heating due to gage current and the effect of reinforcement of low-elasticity materials. To ensure accurate measurement by avoiding the self-heating effect of gage current, consider the following: 1. Select a lower bridge excitation voltage if the amplifier allows bridge voltage selection. 2. Active-dummy method 3. 350?? strain gages