I'm sure I've seen something like this before, but I can't find it now, or even find any appropriate names to call it to search for it.
I'm looking for a small momentary pushbutton switch similar to this:
The switch is approximately 12.7mm by 6.35mm. But the ones I'm looking for can also be twisted 90 degrees to lock them in place while in the unpressed position so they can't be accidentally pushed.
The closest I've been able to find are huge ones at are used as emergency switches for machinery (push in to disconnect, twist to turn back on), but that's not quite what I'm looking for, and way too big.
Is there a special name for such a switch? Am I just imagining that they exist? Or do I just fail at searching?