[Dual Scale Measuring]Woodworking height ruler with 0-180mm and 0-7 inch scales. Clear markings on both sides support fast reading for table and milling machine setup. [Fine Adjustment Control]Height ruler for table features a fine tuning device and rotating adjustment structure. Helps reduce sliding during setup and supports more height and depth changes. [Aluminum Alloy Build]Made of aluminum alloy with galvanized iron fine tuning parts. Resists oxidation deformation bending and during repeated measuring and scribing tasks in workshops. [Measure and Scribe]Dual purpose height and depth ruler supports height measuring height checking depth reading and scribing. Retractable block adjusts by loosening the screw. [Workshop Applications]Suitable for woodworkers using table saws and milling machines. Top cover can be loosened to move the scribing block for and conversion on both sides., Manufacturer: Pissente