The instrument is located in the Mitaka campus, to the west of the Solar Flare Telescope. The observing room is located on the southern side, and the heliostat mirror system is put on the northern side. The solar beam is sent into the observing room by two flat mirrors of the heliostat (20cm diameter), and a solar image of about 5mm diameter is made on a CCD camera by a lens of 6.5cm aperture. The magnetic field is observed by measuring the polarization of the Fe 5324 Angstrom line through a birefringent filter. The Doppler shift of the spectral line is also measured with this system.