Model 3440 D-1
A
A
p
p
p
p
e
e
n
n
d
d
i
i
x
x
D
D
:
:
R
R
a
a
d
d
i
i
a
a
t
t
i
i
o
o
n
n
T
T
h
h
e
e
o
o
r
r
y
y
&
&
S
S
a
a
f
f
e
e
t
t
y
y
This appendix is required reading for anyone who
will operate the Model 3440 Surface Moisture-
Density Gauges.
This appendix covers topics related to radiation
theory and the safe operation of the gauge. A brief
overview of the regulatory requirements related to
the ownership and use of the gauge, as well as a
listing of radiation safety-related warnings and
cautions, is included.