Cast Iron Angle Plate, Angle Plate

Made according to standard jb/t6092-85, material ht200, used to test the perpendicularity and parallelism, and can be used as verfication standard of 90°.
type（mm） perpendicularity between
adjacent measuring
surface flatness and straightness
of measuring surface flatness and straightness
of datum surface
precision grade (μm)
1 2 3 1 2 3 1 2 3
200 × 200 8 16 30 4 8 16 6 12 24
300 × 200 10 20 40 5 10 20 8 16 30
300 × 300 10 20 40 5 10 20 8 16 30
400 × 300 12 24 45 6 12 24 10 20 40
400 × 400 12 24 45 6 12 24 10 20 40
500 × 400 28 50 14 28 24 48
500 × 500 28 50 14 28 24 48
800 × 600 35 60 18 35 28 55