Products » Testing Accessories » Specimen Measuring and Preparation » Specimen Marking Punches » Manual Gauge Point Punch, 0.5 in Gauge Length Manual Gauge Point Punch, 0.5 in Gauge Length Catalog no. W-6718 W-6718 | Manual Gauge Point Punch 0.5" gauge length. View Accessories Catalog Specification Table Specification Table Gauge Length 0.50 in