HOW TO MEASURE DIAMOND
ALUMINIZED SPECIFICATION
ASTM A491
FEDERAL SPEC RR-F-191
TYPE II
ALUMINIZED
2"
1-3/4"
1-1/2"
1-1/4"
1"
3/4"
5/8"
1/2"
3/8"
6 GA
X
X
X
X
X
X
X
-
-
9 GA
X
X
X
X
X
X
X
X
X
11 GA
X
X
X
X
X
X
X
X
X
AASHTO M181
TYPE II