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Cast Iron Straight Ruler

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Cast Iron Straight Rulers are widely used for setting up and leveling machinery, for checking and spotting bearing surfaces during hand-scraping operations. Properly supported, they may be used with various indicating devices to check surface flatness of large machined areas like surface plate, machine tables, lathe beds, machine ways etc.

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Specification:

No.	Size（mm)	Straightness or Flatness of Working Surface			Parallelism Between Both Working Surfaces
		1	2	3	1	2	3
		Precision Degree(μm)
1	500×100x60	6	12		9	18
2	750×100x60	8	15		12	25
3	1000×100x60	10	20		15	30
4	1200×100x60	12	24		18	36
5	1500×100x60	15	30		20	40
6	2000×150x80	20	40	80	27	54
7	2500×150x80	25	50	100	33	65	130
8	3000×180x100		60	120		78	156
9	3500×180x120		70	140		90	180
10	4000×180x120		80	160		100	200