|  | ||||||
| 
					花岗石直角尺规格(mm)
				 | 
					测量面对基面垂直度um
				 | 
					测量面平面度或直线度um
				 | 
					基面平面度或直线度um
				 | |||
| 
					花岗石直角尺精度等级
				 | ||||||
| 
					00
				 | 
					0
				 | 
					00
				 | 
					0
				 | 
					00
				 | 
					0
				 | |
| 
					100×63
				 | 
					2
				 | 
					4
				 | 
					1
				 | 
					1
				 | 
					1
				 | 
					1
				 | 
| 
					160×100
				 | 
					2
				 | 
					4
				 | 
					1
				 | 
					2
				 | 
					1
				 | 
					1
				 | 
| 
					250×160
				 | 
					2.5
				 | 
					5
				 | 
					1
				 | 
					2
				 | 
					1
				 | 
					2
				 | 
| 
					400×250
				 | 
					3.5
				 | 
					7
				 | 
					1
				 | 
					2.5
				 | 
					1
				 | 
					2
				 | 
| 
					630×400
				 | 
					4.5
				 | 
					9
				 | 
					1.5
				 | 
					3
				 | 
					1
				 | 
					2.5
				 | 
| 
					1000×630
				 | 
					6
				 | 
					12
				 | 
					2.5
				 | 
					5
				 | 
					1.5
				 | 
					5
				 |