Art and Science of Stair Building

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. To find the points for pins to describe a curve parallel to A C B Set off from C to P equal B N from the point P as a centre, with S N as a radius, describe arcs cutting the major axis in the points 4 and 5 place pi...