Patent ID: 7225548

Claim:
A method for directing respective sighting axes of independent sighting devices towards a common target object, the method comprising the steps of: providing a first sighting device operable by a first user to be oriented in space, said first sighting device having a first sighting axis and a transmitter for transmitting a reference signal; providing a second sighting device operable by a second user to be oriented in space independently of said orientation in space of said first sighting device, said second sighting device having a second sighting axis, said second sighting device including a receiver for receiving said reference signal, said second sighting device further including an indicator for indicating to said second user a correction direction to apply to said orientation in space of said second sighting device; aligning said first sighting axis on the target object; transmitting via said transmitter said reference signal upon aligning said first sighting axis with the target object; receiving via said receiver said reference signal; acquiring a characteristic of said reference signal, said characteristic other than information-bearing data containing said orientation in space of said first sighting device encoded on said reference signal; determining a relative orientation in space of said second sighting device respective said first sighting device from at least said characteristic; determining an orientation correction from said relative orientation of said second sighting device respective said first sighting device; and, indicating said orientation correction of said second sighting device via said indicator so as to direct said second sighting axis towards the target object.