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Superficial Rockwell Hardness
Testers
MODEL
NO.
900
‐
345D
To reference digital indicator functions and usage, please see 900345-9500 Operation Manual at the back of this manual
Operating
Instructions
&
Parts
Manual
Please
read
and
save
these
instructions.
Read
carefully
before
attempting
to
assemble,
install,
operate
or
maintain
the
products
described.
Protect
yourself
and
others
by
observing
all
safety
information.
Failure
to
comply
with
instructions
could
result
in
personal
injury
and/or
property
damage!
Retain
Instructions
for
future
reference.
Description
The 900‐345 Hardness Tester accurately measures hardness of materials in Rockwell N and T scales. Heat‐treated
steels are tested using a 120
diamond indentor in the N‐scale. Soft/thin materials are tested using a 1/16" carbide
ball indentor in the T‐scale. This tester features a weight adjustment knob for quick and easy adjustments between
different scales. Release/reset lever is provided for quick and accurate testing. Hardness Tester includes standard,
large and V‐shaped anvils for holding small, large and round or curved materials. Storage box, test blocks, 120
diamond indentor and a 1/16”carbide ball indentor.
Unpacking
Tool
Kit:
A.
Large Anvil
B.
V‐shaped Anvil
C.
Small Round Anvil
D.
Calibrated Test Blocks
1.
One each, HR15N
2.
One each, HR30N
3.
One each, HR45N
4.
One each, HR15T
5.
One each, HR30T
6.
One each, HR45T
E.
120
Diamond Indentor
F.
1/16" Carbide Ball indentor
G.
Storage Case
Do Not Discard Shipping Crate as This May
be Needed for Future Transportation.
Be
sure
tester
is
level
both
front/back
and
left/right
to
0.002
in/in.
