In iron and wood.

Steps in multilayers of faggio evaporated with phenolic pasting.
central tree in tubular iron parapet in trafilate round bars from mm.12
corrimano in trafilato in round from mm.27,33 or 38 or platefrom mm.30x10,35x10 or 40x10 departure with ricciolo or plate roundedoff in head with starter shaft from mm.27 full in departure andarrival scale.
the parts in wood will be tinteggiate color polished walnut ormahogany and with setinata protecting varnish.

the parts in iron color to Vs. choice.
from diameter 100 to beyond 240 cm.