The platform. Notice the spirit level at the bottom. in Member's Album 2 Posted January 5, 2011 I bought those at Ikea. I use my backyard for observing and the ground is a bit uneven here and there, so I used to get the platform leveled, but since I don't do astropothography and since they added 11-20 cm height to the eye piece, I stopped using them. I just place the platform on the ground.