Mitutoyo SJ-210 - Mr1 (JIS2001, ISO1997, VDA, Free): Material-Ratio Length Rate 1 (Upper Relative-Material-Ratio Length)

18. Reference Information
No.99MBB122A
18-37
18.5.29 Mr1 (JIS2001, ISO1997, VDA, Free): Material-ratio length rate 1 (upper
relative-material-ratio length)
From the lines that are obtained by selecting 2 points (point A and point B) on the BAC
(material-ratio profile) that differ in mr value by 40%, obtain the line with the smallest
inclination. Set point C and point D to be the points where the obtained line intersects the
lines at mr = 0 and mr = 100. Set point H to the point on the BAC with the same slice level
as point C. Mr1 is the mr value at point H. (Material-ratio length rate 1)
Mr1
D
G
H
C
A
B
E
A2
A1
Rk
Rvk
Mr1
Mr2
40%
J
F
Rpk
I
Rvk
DEPTH (

m)
mr[c] (%)