Camera thread adaptor (1/4"-20) for Skywatcher AZ-3, AZ3 Camera Thread Adaptor - for the adaptation of instruments with 1/4"-20 camera thread to the AZ 3. The AZ3 mount has a mounting plate which is made for telescopes with tube rings. Spotting scopes, cameras and many other instruments do however not have tube rings, they usually have a 1/4" camera tripod thread. The AZ-3 1/4-20 camera adapter is the part you need to connect a camera or spotting scope to the AZ3. No tools are needed once you have attached the adaptor to the mount. This adaptor turns the AZ-3 into a very sturdy camera tripod with slow motion controls - at a fraction of the costs of a regular camera tripod with similar properties.