The HG-C series is the industry's smallest CMOS laser sensor *. W20×H44×D25 mm W0.787×H1.732×D0.984 in, about 35 g (excluding cable) * As of May 2015, the company's internal investigation. New optical systems with built-in mirrors generally achieve more accurate and stable measurements by increasing the optical path length between the optical receiving part and the optical receiving element (CMOS), but this also increases the depth of the sensor and the size of the sensor body. The HG-C combines a new optical system with a series of sensors with built-in mirrors that provide a smaller sensor for depth, as well as the equivalent displacement sensor for higher measurement accuracy.