No products in the cart.
Dense flint glass, refractive index 1.620 to 1.623
Stove enameled.
Brass, with ring on top
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.
Brass, plated.