It has 12 x 200mm Hgt steps including top landing plate as per pictures. The treads are approx 600mm wide from central pole. Central pole is 3300mm high.
Pics show staircase before it was dismantled. Some balusters are screw fixed, and some were spot welded. The item "Old Cast Iron SPIRAL STAIRCASE Vintage Industrial Reclaimed Staircase" is in sale since Saturday, November 21, 2020. This item is in the category "Home, Furniture & DIY\DIY Materials\Stairs & Railing\Staircase Kits". The seller is "sealeac_59" and is located in Ilford. This item can't be shipped, the buyer must pick up the item.