50G Orange
70G Yellow
100G Light Green
150G Green
200G Blue
300G Dark Blue
A small colour Gauss chart for you to compare the the colours you encounter is included with every purchase. A photo of the Gauss chart is among the photographs on this listing.
MTX-Film has the advantage that as soon as it is taken away from the magnetic field it will immediately revert back to it's original colour.
This listing is for 11 different sizes of MTX-Film, which are NOT housed in a black thick paper frame. This means that the film of thickness 150~200 (μm) which is very flexible, is able to be wrapped around any curved or irregularly shaped object to test for the magnetic field.
***** Please note:- The film has NO Magnametals logo or size in mm printed on it. These are only on the photos to reduce the chances of Chinese sellers pinching my photos to advertise against me here on eBay. Please note that most of the 'interesting photos' of the standard US magnetic field viewer film were taken by me years ago but are routinely used by Chinese sellers here on eBay and on the internet.......without my permission.*****