Perimeter consisting of semicircular channel with protractorscale-10 degr. divisions, rotable around one axis. 10 metal disks diameter 13 mm 1 sheet of diff. coloured labels 1 strong magnet. Depth: 25 cm Width: 60 cm
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Available through American Scientific, LLC — Exclusive U.S. Distributor of PHYWE Systems. All units adapted for 110V/60Hz.