Woodworking Scriber Gauge Steel Ruler Positioning Block

Feature:
 1. Suitable for the ruler of width under 40 mm and thickness under 2 mm.
 2. Small and portable ruler locator, convenient to carry around 
 3. Easy to use: just move the ruler stop tool to the required scale and tighten the screws to mark the measured value
 4. Suitable for woodworkers, engineers, home crafts, model makers and cabinet makers