Roubo "Pied du Roi" Ruler

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Roubo "Pied du Roi" Ruler

60.00 70.00

The Pied du Roi Ruler is from the "Rulers of the Ancient World" line of measurement tools.

Each is made in French Sycamore (Acer pseudoplatanus), geographically and chronologically significant to the French culture it came for. It is produced in the same format and fashion as the Limited Edition rules, and makes a great edition to that set. It has a hand-rubbed French polish finish, with a hard wax coating, and is handplaned to size and etched by an ultra-precise CNC process.

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Additional Info

This ruler is based on the 18th Century "Pied du Roi" or French foot. This foot varies from the modern imperial foot a significant amount, about 51/64" over a foot. This makes each inch/thumb (pouce) 1.066" and each foot (pied) 12.792". The inch is divided into 12 lines (lignes), an interested subdivision used by the French for its divisibility. This adds an interesting feature to this ruler- one edge's subdivisions emphasize 1/6 and 1/3 subdivisions, while the other emphasizes 1/8, 1/4 and 1/2 subdivisions.

This period measurement finds modern significance through a historic account of woodworking techniques, "L'Art du Menuisier" by André Roubo. In this book (a beautiful reprint of which can be found over at Lost Art Press) Roubo uses the French inch, foot and fathom as a scale for each drawing. This rule is intended as a study aid/physical representation of this unit, for those seeking to replicate or produce projects from the plates, or better understand the scale on which Roubo's work was done.