Though designed for use with our Veritas Wheel Marking Gauges, these gauge heads are a simple retrofit for any marking gauge with a 5/16" diameter shaft. 
Made from carbon steel, the 5/8" diameter wheel cutters will scribe at any point in their circumference and slice rather than tear fibers for clean, accurate cuts. The single-bevel cutters are usable in-line for marking parallel lines, or with bevels facing for sure mortise sizing and chisel registration. Secured with integral set screws, the blades can be set as close as 3/8" apart. The included shaft collar registers against the marking gauge fence to ensure the shaft remains parallel to the workpiece, preventing accidental tilting of the cutters in use; this is especially useful when scribing large offsets from the fence. 
Supplied as a pair of cutters with a shaft collar, hex key and instructions. 

Marking/Mortise Gauge Heads

Marking/Mortise Gauge Heads, Strykmått

Marking/Mortise Gauge Heads, 15N01.01