Instruction: Answer the given question using the supporting document.

Input:
Question: Does this model enable horizontal and vertical viewing?
Document: This gadget is the best for upgrading an old exercise bike, because yes, it is boring riding in place. Read a book, watcha movie. Once installed on the contraption of your choice you can position your IPad vertical or horizontal, back a bit or closer, even at an angle and then tighten the mechanism so it stays at your desired position. The ball joint mechanism allows for a great deal of mobility.
I mounted the U-bolt model on my indoor bike and I review my email on my I-Pad and read e-books will I'm working out. Keeps my hands free and allows me to push my workout to new limits while getting some work done as well. 2 for 1Mentally & physically rewarding.
Very simple to install. Didn't quite fit my Kindle (I know, not what it was intended), but would definitely fit an ipad.
Used this to mount the iPad to a headrest in our car so my kid could watch movies during a road trip that covered three thousand miles. I was worried that the u bolt mount might not squeeze down far enough to clasp the headrest support solidly, but it worked great.
This was purchased for a sailboat, who knew I'd get so excited about a mounting bracket?I'm pretty clueless on land when it comes to a sense of direction, so don't even ask about what an idiot I am on sea. In addition, the darn boat kind of intimidates me, as I don't have the years of experience most of the folks at my marina have.
This is a nice sturdy ipad holder. I use it on my spin bike for Goji games. I also read books, magazines and can watch tv as I spin. The holder can be turned to use vertically or horizontally and works great either way! It is worth the price!
This didn't come with any directions so it took a minute...but was quick & easy to mount. Let's go biking.
This came with no instructions, but it was easy to figure out. It mounted firmly  on my handlebars, and now I can watch movies on my iPad while using the bike as a stationary trainer. This item is sturdy and well-constructed. I am satisfied with it. One thing I don't like but don't see a way to avoid is the swivel head part that attaches to the bike. You need tools to attach it or remove it.
This Ipad Mount is made of steel. It holds onto the Ipad and I am glad to have bought it compared to a plastic mount.
The mount arrived quickly and looks and feels very sturdy. I'm very pleased with it.
Answer: Yes.  It is a ball joint so it holds it at almost any angle. There are also two areas on back to mount the standard ram-mount diamond plate. One more suitable for horizontal and the other for vertical but either could do both.