Maru-Joku means round table.
The Rikyu Konomi Maru-Joku was made of Kiji style paulownia wood, and has three small legs under the jiita. Sotan's konomi is made of Ikkanbari papiermache and black lacquer with the wood grain showing through.
The shelves are 31.2 cm in diameter, and the height of the Maru-Joku is 38.8 cm.
For the Rikyo-Konomi one of the legs should be in the front towards the host.