Trinity are the sole UK importer for this brilliant invention. It’s a calibration tool that allows us to make piece perfect surrounds to the inner edges of the mount – the Fillet. It saves time, lowering costs, and is a good example of the investment we make in finding the right tool for the job. You’ll see a good example of the FM effect under Objects and Memorabillia, Compasses. It’s an added design feature that we can offer you to enhance the appearance of your project.