0-3 Cylinder Block #4

0-3 Cylinder Block #4 is the toddler version of the fourth cylinder block: the cylinders share one diameter and differ only in height. A young child pulls each one out by its knob, tries it in the wrong hole and finds that it goes in everywhere but sits right in only one place, so the material corrects the work and no adult has to. Holding the knob is also the exact grip the hand will later need for a pencil. For children from birth to three ready for their first fitting work.