Luban trusquin, with circular blade

Range: D Series
Guidance: micrometric adjustment of the jaw/stop
Blade: Integrated circular (hardened steel)
Body: robust metal (often steel or alloy)
Handle: ergonomic, metal or wood depending on the version
Tracing capacity: adjustable (sliding post)
Stem: graduated over 120mm
Total length: 180mm
Maximum tracing length: 150mm

Drawing clean lines before sawing or fitting.
Light pre-notching to guide a saw or wood chisel.
Repeatable marking on multiple parts.
Identifying joints (tenons, mortises…).
Squareness control on edges and surfaces.

Already in the 19th century, some English tool manufacturers offered circular blade marking gauges because they offered more precision in marking compared to traditional pointed marking gauges.
The Series D circular blade marking gauge is a precision instrument designed for marking and locating dimensions on wood, panels, or other materials. What distinguishes it from a traditional marking gauge is the addition of a circular blade, which not only marks a line on the surface but also lightly scores the grain—useful for preparing joints or cleaner grooves before sawing or baking.
The circular blade is mounted on the tool in such a way that it behaves like a mini controlled notching tool, while still offering the precision of micrometric marking. The D Series is designed to be rigid, comfortable to adjust, and durable, making it a reliable choice for woodworking shops, cabinetmakers, or any demanding marking job.
In addition to its precision, this marking gauge also boasts an excellent grip thanks to its attractive wooden insert with a raised edge. A flat surface around the circumference of the brass plate prevents the gauge from rolling and falling off the workbench.

This marking gauge is for those who wish to reduce inaccuracies in pencil lines, integrate a more visible reference point in the wood, or prepare reference points for assemblies while maintaining fine control of the movement.