Angle-foot specifications

 Angle square feet of specifications: Face straightness or flatness Face angle α both accuracy specifications Accuracy class 1 2 1 2 convex 45 ° 55 ° 60 ° 90 ° 120 ° × 500 6 12 ± 1 ± 1.5 recess 45 ° 55 ° 60 ° 90 ° 120 ° × 500 6 12 ± 1 ± 1.5 protrusion 45 ° 55 ° 60 ° 90 ° 120 ° × 750 8 15 ± 1 ± 1.5 recess 45 ° 55 ° 60 ° 90 ° 120 ° × 750 8 15 ± 1 ± 1.5 protrusion 45 ° 55 ° 60 ° 90 ° 120 ° × 1000 9 18 ± 1 ± 1.5 recess 45 ° 55 ° 60 ° 90 ° 120 ° × 1000 9 18 ± 1 ± 1.5 protrusion 45 ° 55 ° 60 ° 90 ° 120 ° × 1500 15 30 ± 1 ± 1.5 recess 45 ° 55 ° 60 ° 90 ° 120 ° × 1500 15 30 ± 1 ± 1.5 lower production costs dovetail foot, so that the price can dovetail foot in the competition dominate the market, 99.8 percent of the dovetail foot manufacturing enterprises are using a manual scraping process. Although manual scraping relatively backward, but to dovetail foot, in the lower accuracy is relatively high, and no machining can not replace a process.