On Architecture

Vitruvius Pollio

Vitruvius Pollio, creator; Morgan, M. H. (Morris Hicky), 1859-1910, translator

7. The 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 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 xelw/nion, 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?

8. The breadth of the inner slips is one quarter of a hole; their

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thickness one sixth. The coverjoint or lid of the chelonium is dovetailed into the shafts of the ladder, and is three sixteenths of a hole in breadth and one twelfth in thickness. The thickness of the square piece on the ladder is three sixteenths of a hole, . . . the diameter of the round axle will be equal to that of the claw, but at the pivots seven sixteenths of a hole.