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Full size model, with skull dissectable in three parts, articulated.
Brass, with ring on top
Aluminium, diameter 50 mm, in metal frame, with two hooks.
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.
Balance designed to work for mass and force activity. Dual calibrated in grams and Newton.