Req 5e — Measuring With a Perforation Gauge

A perforation gauge measures the number of perforation holes within a set distance. The merit badge pamphlet explains that collectors use it to tell apart stamps that may look alike but were issued with different perforation styles.

Why this tool matters

A stamp’s design alone is not always enough to identify it. Two issues might have the same picture and denomination, but one has a different perforation measurement. That difference can change the catalog listing and the value.

How to demonstrate it

1. Place the stamp along the printed measurement lines on the gauge.
2. Slide it until the perforation holes line up with one set exactly.
3. Read the matching measurement.
4. Compare that number with the catalog listing.

The key is patience. If the holes do not line up cleanly, keep checking. Close is not good enough for identification.

This tool connects directly to Req 4, where catalog listings depend on details like perforations, paper, and watermark.