This adapter attaches to the top of the MEC column in place of the M002C mount. It provides a 3/8-16 male thread and may be used to hold other items atop the column such as a binocular parallelogram mount. See the example in one of the pictures above. The Parallelogram mount must have a standard camera tripod 3/8-16 adapter for this to work.
The adapter scews to the MEC column the same as the M002C mount head with three screws. It has a stainless 3/8-16 screw welded to the adapter. Approximately 5/16" of thread (about five threads) extend above the base. Three 1/4-20 stainless socket cap head screws are also included to attach this adapter to any Stellarvue MEC column. This adapter does not work with other brand columns.