30 WINDERS IN THE QUARTER-SPACE, STARTING FROM A NEWEL 79
31 THE PLAN OF RAIL FORMING PART OF AN ELLIPSE, STARTING FROM
A NEWEL OVER WINDERS 81
32 SHOWING THE MOULDING OF RAILS, AND A METHOD OF
PROPORTIONATELY INCREASING OR DECREASING THE SIZE OF THEM 83
Practical Stair Building and Handrailing By the square section and falling line system. · 第 22 / 78 题