A method and device for location of pipes is disclosed. The method can comprise mounting one or more centering tools, each having a reflector to a first pipe such that the reflectors are either aligned with, or can be used to determine the location of the center of the first pipe and mounting one or more centering tools, each having a reflector to a second pipe such that the reflectors are either aligned with, or can be used to determine the location of the center of the second pipe. The method can further comprise determining a first distance between the center of the first pipe and a light emitting source at an observation point disposed between the first pipe and the second pipe and determining a second distance between the center of the second pipe and the light emitting source at the observation point.