ok here is and image of tripling. this is on a Canadian toonie the whole coin is tripled. doubling there would be just 2 level. this coin has 3 levels. I am using a camera, bellows and microscope objective. 4 power. the objective pushed out that far from the camera. ray would know what magnification I would be getting. its probably 10 power at least or more. this is what you can see on a computer screen. with this setup for checking coins hope it helps

























