Matthews Back Light Stand, Black - 19-52" ProTapes 001UPCDUV425MBLA The thickness between pins is

The thickness between pins is 0

These are massive single pole - double throw (SPDT) sealed relays

Universal X-Grip Holder

We used these

The black Peerless Industries SmartMount Articulating Wall Mount for 26 to 46" Displays allows you to extend your display up to 20

Matthews Back Light Stand, Black - 19-52" ProTapes 001UPCDUV425MBLA The thickness between pins isThe Matthews Back Light Stand is configured so that accurate positioning of your back light may be achieved. It may be used for either background illumination or back lighting the subject. The mounting pin at the top is a 5 8 to 1 4 20. After removing the riser the additional pin stored on the leg of the base is 5 8" that may be used to lower the mounting position directly at the base. An extendable column allows for a wide range of heights and an