The world's largest optical astronomical telescope "SUBARU", which the National Astronomical Observatory of Japan built at the top of Mt. Mauna Kea in the Hawaii island, was started the operation from December, 2000 and has achieved shining success since then. It carries a full load of the state-of-the-art high-tech technology in this equipment whose universe of 15 billion-light year beyond can be seen. As one of the key technologies, the tuning-fork sensor of Shinko Denshi has been harnessed. 261 pieces of actuators developed with our Tuning-fork technology, continuously control the main mirror, which has 20cm thickness, 8m diameter and 20t weight. Shinko Denshi is the only one company who develops and produces electronic balances and scales with the tuning-fork sensor. Since founded in 1963, we have focused the technical advanced and originality in the fields of weighing and measurement, and have been introducing a lot of new products. Our electronic balance and scales with tuning-fork sensor are highly precise and excellent stability. As the result of such high performance, we have received high evaluation feedback from worldwode including EU, as proved by the "Subaru Optical Telescope."