NEW METHOD

4th Gathering original: "4 Form." This likely refers to the signature mark for the printer to organize the pages of the book.

A technical perspective drawing shows a two panel wooden frame or folding gate. The left panel is unlabeled, while the right panel and the central joint contain several letter labels for structural points: A and D mark the central pivot points at the top and bottom; E is on the central vertical beam; J, I, and K are on an intermediate vertical beam of the right panel; B, F, G, and C are placed along the outermost vertical post; and H is at the bottom of the central joint. The structure features diagonal cross braces in the upper sections of the panels and vertical struts in the lower sections.

But to explain this more fully, note once more the 4th Figure, as can be seen in this 5th Figure, by adding the aforementioned iron bar original: "barriere de fer" labeled L M. This bar is placed in front of the side F G and turns with the lever regle original: "regle". While this can mean a ruler, in this mechanical context it refers to a straight rod or lever used to actuate the mechanism. M N. At the end N, there is an iron latch original: "loquet" which falls into a catch original: "nez", literally "nose". A common term for the protruding part of a latching mechanism. also made of iron, which is attached to the upper side.