Photosynthometer

With effective scale lengths of nearly 9″, Rotary scales offer greater accuracy than linear scales. All balances are graduated in gram/Newton. Dial: 3″ diameter metal suspension ring at top and hook at bottom.

Demonstrates the typical concept behind the architecture of roman arch structures, which are famous for their strength in compressive loading. Comprises a pre assembled 3-part buttress and a set of 23 wooden blocks. Fully assembled arch can easily support the weight of a child.