Right angle rules- Precision
Item No.	TYPE (mm)	Squareness between measuring surface and datum surface		Flatness & straightness of measuring surface		Flatness & straightness of datum surface
		Precision grade (μm)
		00	0	00	0	00	0
GSJ001	100x63x16	2.0	4.0	1.0	1.0	1.0	1.0
GSJ002	160x100x20	2.0	4.0	1.0	2.0	1.0	1.0
GSJ003	250x160x25	2.5	5.0	1.0	2.0	1.0	2.0
GSJ004	40x250x40	3.5	7.0	1.0	2.5	1.0	2.0
GSJ005	630x400x63	4.5	9.0	1.5	3.0	1.0	2.5
GSJ006	1000x630x80	6.0	12.0	2.5	5.0	1.5	3.0
Notes:1)For inspecting machine spindle and else squareness work-pieces
2)Have round holes for size over 250x160mm to reduce weight so to take easily.