M
a
t
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r
i
a
l
6
0
6
1
-
T
6
A
l
u
m
i
n
u
m
B
r
a
s
s
C
2
6
0
S
t
e
e
l
1
0
1
8
3
0
4
S
t
a
i
n
l
e
s
s
P
h
o
s
p
h
o
r
B
r
o
n
z
e
F
r
e
q
u
e
n
c
y
(
H
z
)
T
h
i
c
k
n
e
s
s
(
i
n
)
K
=
2
0
4
4
3
1
(
i
m
p
e
r
i
a
l
)
t
a
r
g
e
t
f
r
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q
=
8
8
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H
z
b
a
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t
h
=
7
.
6
2
1
i
n
n
o
d
e
p
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i
t
i
o
n
s
=
{
1
.
7
0
9
,
5
.
9
1
2
}
i
n
