Had a customer ask why a standard size
binocular needs a
tripod adapter to mount it on a tripod. Why not just place the threaded portion directly underneath the binocular? Answer is, there really is no place to put a thread piece that would also allow you to conveniently use the binocular without a tripod. A threaded
tripod adapter pointing straight down would simply take up too much room and interfere with normal use of the
binocular. That's why the threads are located under the cap at the front of the center hinge. In fact, many binocular owners don't even know it is there.