Marking gauges create consistent lines parallel to edges—essential for accurate joinery layout. Understanding the different types helps you select appropriate tools for various operations.
Cutting vs. Pin Gauges
Cutting gauges sever wood fibers with a knife blade, leaving crisp lines perfect for cross-grain work. Pin gauges scratch lines that show up well with oblique light but may tear across grain. Each excels in different situations.
Wheel Marking Gauges
Modern wheel gauges use rotating cutters that produce clean lines in any grain direction. They adjust quickly and maintain settings reliably. Many contemporary woodworkers prefer these over traditional designs for everyday use.
Mortise Gauges
Dual-beam or dual-pin mortise gauges mark both sides of mortises and tenons simultaneously. This ensures consistent tenon thickness and matching mortise widths. Accuracy here eliminates fitting problems during assembly.
Setting Tips
Set gauges directly from the work rather than measuring. Match mortise gauges to your chisel widths. Lock settings firmly before marking—slipping adjustments waste time and create errors.
Usage Technique
Keep the fence pressed firmly against the reference edge throughout the stroke. Tilt the gauge slightly so the cutter trails behind the pull direction. Make multiple light passes rather than one heavy cut for cleanest results.
Quality marking gauges last generations with minimal maintenance. Invest in tools that feel comfortable in your hand and hold settings securely under use.
