Knuckle assemblies are available with knob adjustment. Knuckles came with 1/4-20 male/female threads and lock ring.
I use a mount knuckle on my monopod. It's smaller and lighter (much cheaper) than a comparable camera mount. It adds some flexibility when I don't want to carry a tripod.
82-6060 - AC Power Transformer; 16.5VAC, 40 VA
16.5VAC, 40VA power transformers for security applications. Features a plug-in ground and auto-resetting overload protection. Mfr. #ELK-TRG1640.
82-8485 - Video Coax Surge Protector
Protects valuable CCTV equipment from high voltage surges such as lightning strikes and voltage spikes.
82-11335 - Black Universal Camera Mount w/Ceiling Clip
12 possible combinations 1" mounting head adjustable up to 180° 2" drop ceiling "X" clip 23/8" free-standing/wall mount base Two 2" long shafts One 1" shaft 1/4"/20 threads throughout All parts interchangeable
Purchasing was easy, shipping was fast and the items were packed well.