Table 7. Numerical measurement of groove

Classification			Width (mm)		Depth (mm)		Spacing (mm)
Classification			M	S	M	S	M	S
Con’c	Square		6.27	6.35	6.64	6.35	37.2	38
	Trapez	Top	12.41	12.70	6.22	6.35	56.7	57
	Trapez	Bottom	7.29	6.35	6.22	6.35	56.7	57
Asp	Square		6.33	6.35	6.68	6.35	37.5	38
	Trapez	Top	13.13	12.70	7.32	6.35	55.9	57
	Trapez	Bottom	7.62	6.35	7.32	6.35	55.9	57

M: Measured, S: Standard.