The HG-1 is designed to take the guesswork out of setting up routers, router tables and saw tables. It is great when needing to set up or replicate exact settings. Made with a solid cast iron base, it provides a strong, fixed point that allows adjustment of the gauge without any movement. Providing both imperial and metric scales, this gauge also has a vernier scale for increased accuracy to 0.05mm, allowing for micro adjustments to settings. Measures to a maximum height of 180mm.