Well, now I'm NOT either a great artist, or an technical engineer, but I guess that you'll grab the point, with a little explanation..*S*
The 'T' is actually an old invention, but I thought, that it somehow belongs in my homepage anyway, as it's relatively close to some of the other inventions you'll find here. .*S*
The logic is, that you have a T from i.e. metal pipe or wood, which you overturn. Next thing is, that you apply a dildo, to the 'top end', and a pair of ankle binders at the two 'bottom ends'.
For application to a female, you start out, by inserting the dildo in her
vagina, upon which you strap her ankles into the ankle-cuffs, and provided, that
the T has the right length (height), she'll be standing, with her legs somewhat
open, and the dildo inescapably fixed inside her vagina.
Alternatively, you can choose to insert the dildo into the asshole, making the T
useful for both men and woman.
If you're a little careful, you'd attach the ankle cuffs, i.e. via a ring, so
that they are not entirely fixed to the T, but able to move somewhat, giving the
option to let the sub walk around, wearing the T. That the dildo will be
wiggling around in the process is absolutely no coincidence..*S*