‹‹‹ Vitr. 10.11.6 | Table of Contents | Vitr. 10.11.8 ›››
7the length of shaft of the small ladder (climacis) thirteen holes, its thickness three sixteenths: the breadth of the middle interval is a quarter of a hole, its thickness five thirty-seconds of a hole: the length of the upper part of the climacis near the arms, where it is joined to the table, is to be divided into five parts; of these, two are given to that part which the Greeks call χηλὸς (the chest), the width one sixteenth, the thickness one quarter, the length three holes and an eighth, the projecting part of the chest half a hole. The pteregoma (or wing), one twelfth of a hole and one sicilicus. The large axis, which is called the cross front, is three holes;
7The shafts of the “ladder” are thirteen holes in length, one hole in thickness; the space between them is one hole and a quarter in breadth, and one and one eighth in depth. Let the entire length of the ladder on its upper surface—which is the one adjoining the arms and fastened to the table—be divided into five parts. Of these let two parts be given to the member which the Greeks call the χελὡνιον, its breadth being one and one sixth, its thickness one quarter, and its length eleven holes and one half; the claw projects half a hole and the “winging” three sixteenths of a hole. What is at the axis which is termed the . . . face . . . the crosspieces of three holes?