These unique rotating lines consist of 20 printed blocks which rotate individually through 360 degrees and lock at 90 degree intervals. 20 rotating 4 sided blocks, display a different colour on each side (red, blue, yellow and grey) enabling clear separation of blocks. Fractions from 20ths, 19ths, 18ths down etc and many other fractions to 1 whole can be shown. Size: 435 x 43mm.
These unique rotating lines consist of 20 printed blocks which rotate individually through 360 degrees and lock at 90 degree intervals. 20 rotating 4 sided blocks, display a different colour on each side (red, blue, yellow and grey) enabling clear separation of blocks. Fractions from 20ths, 19ths, 18ths down etc and many other fractions to 1 whole can be shown. Size: 435 x 43mm.