The staircase is 8 and 1/2 inches high and has 36 5 mm thick steps 1 and 1/8 diameter. The first 18 steps spiraling from center out and back to center then the top 18 center to center in the opposite direction.
Turned from a solid piece of brass over 55 hours just turning time never mind the deburring, fine sanding and polishing.
Comments welcome
Regards from Jeff.