What this "BNC Jack to BNC Plug Adapter" is used for?

[gamalot]

I am curious what this "BNC Jack to BNC Plug Adapter" is used for?

https://www.amphenolrf.com/112667.html

[squadchannel]

It doesn't seem to be a feed-through terminator, so I'm not sure.

MOD:
I wonder if this is for a BNC connector directly from the internal unit to the outside of the enclosure. This may reduce losses since no cables are used.

[tooki]

I can envision a few uses:
1. Port saver. For some jack that gets plugged/unplugged constantly, leave the extender on the device so it wears out, and once it does, just replace the extender.
2. Connecting things without cables. Lots of things like filters, amplifiers and attenuators, exist as little metal boxes for inline use, with a male BNC on one side and a female on the other. To connect those directly onto the input of a piece of test gear, you might need a few cm of extension to get around the case or knobs or something.

[nctnico]

Tooki is on the money with a port / connector / pin saver. On equipment which sees a lot of mating cycles, you install sacrificial male/female adapters so the connectors in the equipment itself doesn't wear out.

[jonovid]

Tooki is on the money with a port / connector / pin saver. On equipment which sees a lot of mating cycles, you install sacrificial male/female adapters so the connectors in the equipment itself doesn't wear out.

yes a sacrificial port saver. For some jack that gets plugged & unplugged constantly.
I use a USB extension as a port saver on my TV  for daily portable HDD use.