Granite parallel

Key Attributes.

granite parallel ruler Used to test the straightness and flatness of workpiece and equipment installing. We have standard size in stock . Made according to standard JB/T7977-99, material HT250, working surface made by skiving or precise rubbing. Used to test the straightness and flatness of workpiece and equipment installing. Working environment temperature (20 ± 5) . Type (mm) Straightness and flatnessof working surface Parallelism between working surfaces Precision grade ( µm) 0 1 2 0 1 2 500 × 35 3 6 12 4.5 9 18 750 × 40 4 8 15 6 12 25 1000 × 50 5 10 20 7.5 15 30 1250 × 50 12 24 18 36 1600 × 70 15 30 20 40 2000 × 80 18 36 27 54 2500 × 80 44 65 3000 × 100 52 78 3500 × 100 60 90 4000 × 100 68 100 Your inquiry will be highly appreciated.Hope this will be a nice start of our long businese cooperation.