3D perforation gauge- Sizes 7.5-12

3-D perforation gauge for measuring stamp perforations. Finally, a perf gauge that works against mounted stamps in albums and other formerly inaccessible, and hard to measure locations! It is so quick to use, it fits right to the stamp. Easily positively identify stamps! Various colors and perf sizes available upon request. This perf gauge is all that we use. Fast, easy to see, simple. **Gauges are all handmade, in house, in small batches. Please excuse any minor flaws/inconsistencies**