SPECIMEN GAUGE MARKING PUNCHES
Punch marking a metallic specimen 1
2
Gauge-point punches are used to punch mark a metallic specimen with a set gauge length before testing so that specimen elongation can be measured either during or after the test. Punches are available for a range of common gauge lengths in both manual and automatic styles.
Principle of Operation Manual gauge-point punches require a strike with a hammer to punch mark the specimen. Standard punches consist of either a single set of punch points or a combination of two different sets of punch points. The punches are checked at the factory to provide punch marks at a predetermined, fixed gauge length. MANUAL GAUGE POINT PUNCH Catalog Number
1
2
Description
Gauge Length mm
in
W-6714
Manual gauge point punch
-
8
W-6718
Manual gauge point punch
-
0.5
W-6719
Manual gauge point punch
-
1.4
W-6771
Manual gauge point punch, combination gauge length
-
1/2
W-6771-B
Manual gauge point punch
25 / 50
-
W-6709
Extra punch points, set of two
50.8
2
W-6704
Extra punch points, set of two
100 - 200
4-8
W-6703
Certification of gauge length
-
-
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