本文介绍一台大尺寸磁铁的磁场空间分布测量装置。它可用于储存环和束流转运系统的弯转磁铁的磁场空间分布测量,也可用于其他类型大磁铁或分析磁铁的磁场空间分布测量。该装置配有高精度的霍尔片测磁探头,可沿上下、左右、前后三个方向移动,进行半自动测量。测磁探头的分辨率为万分之一,测磁精度好于万分之三。测量范围长1800 mm, This article describes a large-size magnet magnetic field distribution measuring device. It can be used to measure the spatial distribution of magnetic field of bending magnets in storage rings and beam transport systems. It can also be used to measure the magnetic field distribution of other types of large or analytical magnets. The device is equipped with high-precision Hall piece magnetometer can be moved up and down, left and right, front and rear three directions for semi-automatic measurement. The resolution of the magnetic probe is one ten thousandth, and the magnetic measuring accuracy is better than three ten thousandths. Measuring range of 1800 mm long,