Ursma Productions LLC, 17130 Downing St, Apt 301, Gaithersburg, MD 20877, US

MMI Corporation was founded in 1973 for the purpose of supplying teaching materials and equipment for astronomy to educators at secondary and College/University levels. Products includes portable and permanent planetariums in dome sizes ranging from 10 ft. diameter ( 3meters ) up to domes in the 40 ft. ( 12 meters ) and 50 ft ( 15 meter ) range and including suspended, inflatable and permanent type planetarium domes. We also offer many products such as our Polaris observatory domes, 35mm color slides, videocassettes, laserdiscs, CD-Roms, Sun-Moon-Planet models, celestial, terrestrial and planetary globes, satellite models, and a variety of other items, many not found elsewhere. MMI customers include College/University and secondary educators, planetariums, observatories, researchers and amateur astronomers.