Feature: 1. Specifications: Features metric scale of 5mm, 6mm, 8mm, 10mm, 12mm, imperial scale of 3/16, 1/4, 5/16, 3/8, 1/2 inch. Height gauge function, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 8mm, 9mm, 10mm, 14mm, 16mm, 1/8, 3/16, 1/4, 1/2, 5/16, 3/8, 7/16, 9/16, 5/8 inch. 2. Aluminum Alloy: This dovetail jig caliper uses excellent aluminum alloy material with anodized finish, ensuring higher hardness and wear resistance, with good insulation, and longer service life. 3. High Accuracy: The dovetail caliper adopts CNC fine machining to ensure high measurement accuracy. With meticulous carving techniques, clear metric and imperial scales are provided to reduce work errors. 4. Application Field: Adopting prefabricated male and female guide rails, which meet the standard sizes applied in furniture manufacturing, suitable for setting the tool height on the table saw and the depth of the router bit. 5. Easy to Operate: This woodworking gauge helps you easily make repeatable, sturdy, and accurate dovetail joints, precisely controlling the size of protrusions by controlling the locating of teeth and milling cutters. Specification: Item Type: Dovetail Jig Caliper Product Material: Aluminum Alloy Front Metric Scale: 5mm, 6mm, 8mm, 10mm, 12mm Back Imperial Scale: 3/16 inch, 1/4 inch, 5/16 inch, 3/8 inch, 1/2 inch Height Gauge: 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 8mm, 9mm, 10mm, 14mm, 16mm (Metric Scales), 1/8 inch, 3/16 inch, 1/4 inch, 1/2 inch, 5/16 inch, 3/8 inch, 7/16 inch, 9/16 inch, 5/8 inch (Imperial Scales). Package List: 1 x Dovetail Jig Caliper