3D perf multi gauge

Rugged Montana Mountain 3-D perforation gauge for measuring stamp perforations, sizes 8.5-15, with quick reference chart and confluence gauge. Works against mounted stamps in albums and other inaccessible, and hard to measure locations. Quick to use, it fits right to the stamp. Easily, positively identify stamps. Various colors and perf sizes available. We created this perf gauge because formerly there was no easy option for measuring delicate stamps, mounted in albums, that we have found. Now we can! Fast, easy to see, simple. Easy to read mint green color stands out against tough to see, old, perforated paper. Price is for perforation gauge instrument only Please excuse small imperfections as these gauges are created by hand in small batches.