Very handy item that helps to produce photos that are not askew. Mounts on top of the camera in the flash hot shoe. Two connectors enable you to mount it horizontaly or verticaly. Very helpful when you want make photos of architecture, panoramas or QTVR. Are you sure, that your tripod is enough? I have some of them, and maybe I could sell it if you are interested in ... and if you live in Poland. I don't want to ship abroad. If you are not from Poland, consider buying it directly from Manfrotto or Hama (for about $35). It could be possible to buy these levels on http://ebay.plhttp://allegro.plhttp://swistak.pl or http://aukcje24.pl auctions. If you have some questions about them, please just ask me via email.