Perimeter, diameter 60 cm

Function and Applications

Perimeter consisting of semicircular channel with protractorscale-10 degr. divisions, rotable around one axis.

Equipment and technical data

• 10 metal disks diameter 13 mm
• 1 sheet of diff. coloured labels
• 1 strong magnet.
• Depth: 25 cm
• Width: 60 cm