Surveying instrument

A surveying instrument which is installed in a room and performs a measurement at a plurality of installation points, wherein said surveying instrument comprises a first measuring component and a second measuring component which are provided on a frame, wherein said first measuring component comprises a horizontal rotation driving unit for horizontally rotating said frame around a vertical axis, a horizontal angle detector for detecting a horizontal angle of said frame, a telescope incorporating a first distance measuring unit for sighting predetermined measuring point, emitting said first distance measuring light, and measuring a distance, a first vertical rotation driving unit for vertically rotating said telescope around a horizontal axis, a first vertical angle detector for detecting a vertical angle of said telescope, and a control module, wherein said second measuring component comprises a second distance measuring unit for emitting said second distance measuring light which is a pulsed light and measuring a distance in accordance with each pulsed light, a scanning mirror for deflecting said second distance measuring light within a vertical plane, a second vertical rotation driving unit for vertically rotating said scanning mirror around a horizontal axis, and a second vertical angle detector for detecting a vertical angle of said scanning mirror, wherein said control module acquires point cloud data of a whole circumference in said room with the use of said second measuring component in accordance with each installation point, makes said first measuring component to measure a predetermined position in said room, prepares outer shape data of a same height and a same shape in accordance with each installation point based on a measurement result of said first measuring component or said second measuring component, performs a shape matching of each outer shape data, and registers each point cloud data based on a movement amount and a rotation amount at the time of performing the shape matching.