I have been buyi g various tabke lampos and magnifiers.  All sorts sone have attacked tol desk some sit on tabke top.  Many forvuyse makong hewely axnx doknf fibe detsil work.  
This is by far the bast snd will be thed only knond I will buy and recimmend anymore.  It goes with me anywhere from room to room.  just tull it there snd I casn knit in front of thd TV. ir take it to myh bedroom and knit in bed.  Its perfect brightness and the magnetism is perfect size.  I got the rectangular one not the round one and it is a great size.