According to CIE IESNA National standards and other requirements require the use of rotating lamps to achieve multiple measurement methods such as B-β, A-α, and C-γ. Used for measuring the spatial light intensity distribution and various photometric parameters of indoor lighting fixtures, floodlights, and road lighting fixtures. Including: spatial light intensity distribution, light intensity distribution curve on any cross section can be displayed in rectangular coordinate system or polar coordinate system, spatial equal intensity curve, plane equal illuminance distribution curve, brightness limit curve, annular luminous flux, glare level, luminaire efficiency, effective luminous angle, upward light flux ratio, downward light flux ratio, total luminous flux of luminaire, effective luminous flux, utilization factor, as well as electrical parameters such as voltage, current, power, power factor, etc. It can work with double or single column.