
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ▲
I
NSTRUCTION
M
ANUAL
3601 E. 34th St. Tucson, AZ 85713 USA Tel. +1 520-882-6598 Fax +1 520-882-6599 email: [email protected] Web: http://www.metallographic.com
Please read this instruction manual carefully and follow all installation, operating and safety guidelines.
OMEGA-RT-60/150 Rockwell Hardness Tester
Scales
Hardness Range of the Standard
Hardness Blocks
Max. Tolerance of
Displaying Value
HRA
(20
~
75)HRA
±
2HRA
(
>
75
~
88)HRA
±
1.5HRA
HRB
(20
~
45)HRB
±
4HRB
(
>
45
~
80)HRB
±
3HRB
(
>
80
~
100)HRB
±
2HRB
HRC
(20
~
70)HRC
±
1.5HRC
HRD
(40
~
70)HRD
±
2HRD
(
>
70
~
77)HRD
±
1.5HRD
(
>
90
~
100)HRE
±
2HRE
HRF
(60
~
90)HRF
±
3HRF
(
>
90
~
100)HRF
±
2HRF
HRG
(30
~
50)HRG
±
6HRG
(
>
50
~
75)HRG
±
4.5HRG
(
>
75
~
94)HRG
±
3HRG
HRH
(80
~
100)HRH
±
2HRH
HRK
(40
~
60)HRK
±
4HRK
(
>
60
~
80)HRK
±
3HRK
(
>
80
~
100)HRK
±
2HRK
HRE
(70
~
90)HRE
±
2.5HRE
HRL
(100
~
120)HRL
±
1.2HRL
HRM
(85
~
110)HRM
±
1.5HRM
HRR
(114
~
125)HRR
±
1.2HRR
11