Bridger & Kay Cancellation Gauge

The Bridger & Kay Cancellation Gauge is printed on clear plastic and is easy to use to find the position of cancellations of stamps.

It is designed for two main purposes in mind:

• To measure the diameter of a full or part of a circular cancellation. 
• To give an easy form of reference for the letters and numbers in a cancellation to make it easier to compare items through correspondence.

It works especially well with foreign stamps, including many British and some German stamps.