Crown Pioneer Deluxe Screwslide Mortising & Marking Gauge is a precision woodworking tool designed to deliver accurate and fine-tuned measurements. This gauge features a single pin marking side and a unique threaded screw-slide mechanism that allows for precise adjustment of the distance between the double pins on the mortising side. The pins can be set to over 2-1/4 inches apart, making it versatile for various marking tasks. Measuring approximately 7-1/2 inches in length, the gauge is crafted from durable, stable, and sustainable bamboo, complemented by brass fittings and wear plates for added longevity and reliability. This combination of materials ensures a robust tool that maintains accuracy over time, for both professional woodworkers and hobbyists alike. Model Number: 154W