Standard marking gauges have to be tilted to just the right angle to avoid the pin chattering. There is also a tendency for the pin to follow
the grain of the timber, leaving you with a far from perfect line. Wheel gauges resolve both those problems and these smart tools from Veritas are well worthy of consideration by serious
These tools feature hardened steel cutters which scribe perfectly at any point on their circumference, obviating alignment problems. Because the cutting disc has its bevel on the inside,
towards the stock, it draws the stock against the timber edge reducing the chance of wavering lines. Being a cutter - like a marking knife or cutting gauge - the line it leaves across the grain is perfectly
clean. Setting is aided by an internal O'ring which maintains just enough friction on the stem to prevent slippage. A nice, smart piece of kit, well thought out.
The Micro-Adjust versions feature a
thimble setting system which allows really precision setting yet gives a full 3/16" (~5 mm) of fine adjustment. These are available in both graduated and non-graduated versions, metric and imperial
The cutters on all Veritas wheel gauges can be simply sharpened by laying flat on a fine diamond or oil stone and honing the flat surface.
The latest addition to this excellent range is the 05N70.01 dual marking gauge. In this model the two rods can be adjusted independently, up to 5 3/4 inches (145 mm) from the face of the
head. The cuitters have bevels on opposite faces, ensuring that the cut can always be arranged with the bevel in the waste side of the line. Not only is this a great gauge for
marking mortises and tenons, but it can also be used to set, and repeat, two independent dimensions, thanks to the orientation of the cutting wheels in relationship to the head.