For the scanned two TIF images, it should be the first stitching, and then the geometric correction is reasonable, are applied to this tool.
1) Image Stitching
Use the Georeference tool to hook Auto Adjust first.
The addition of a figure point with the same name, you can determine the coordinates of a graph, then input the coordinates of B graph to a, and then Updata georeferencing,rectify to correct B chart. Conversely, it can.
PS: You can directly select the point of a map, then select the point B, this can be tried.
After the correction, it's already together. The next set is on the line. Mosaic to new raster.
PS: If there is a black box, it can be removed in advance PS, or extract by mask.
2) Geometry correction
can use latitude or longitude or kilometer net.
PS: (longitude 19316, latitude 3816)
When you are finished correcting, specify the appropriate coordinate system.
PS: Each of the details need to experience the ...
ArcGIS Tutorial: TIFF image stitching and geometry correction