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If you've ever wanted to play with magic eye tubes, this is your chance. Jürgen Grau designed a versatile little gadget that allows you use several different types of indicators. The secret is that he has a circular PCB that actually can be rotated to accomodate different types of tubes. The base PCB has three different sockets to provide a universal connection when used in conjunction with the top PCB. That is clever. Best of all - they should be for sale soon!
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