Notebook sample block contains standards for the six most important maching methods in the prevalent"AA" values.All 30 speciments are calibrated in u"AA(Arithmetical Average) and in the metric equivlents um Ra.Surface roughness comparsion scales are available in the following sets:
Turning
|
Vertical milling
|
Horizontal milling
|
Plain grinding
|
External grinding
|
Plat lapping
|
µm
|
µin
|
µm
|
µin
|
µm
|
µin
|
µm
|
µin
|
µm
|
µin
|
µm
|
µin
|
12.5
|
500
|
12.5
|
500
|
12.5
|
500
|
1.6
|
63
|
1.6
|
63
|
|
|
6.3
|
250
|
6.3
|
250
|
6.3
|
250
|
0.8
|
32
|
0.8
|
32
|
|
|
3.2
|
125
|
3.2
|
125
|
3.2
|
125
|
0.4
|
16
|
0.4
|
16
|
|
|
1.6
|
63
|
1.6
|
63
|
1.6
|
63
|
0.2
|
8
|
0.2
|
8
|
|
|
0.8
|
32
|
0.8
|
32
|
0.8
|
32
|
0.1
|
4
|
|
|
0.1
|
4
|
0.4
|
16
|
0.4
|
16
|
0.4
|
16
|
0.05
|
2
|
|
|
0.05
|
2
|