See our instructional video for more information.
If you require further information please do not hesitate to contact us.
How to get the best from your Detectamark Spectrum:
The effectiveness of the Detectamark Spectrum depends on the shadows being cast in the paper where the watermark design has been impressed into it. It is important to minimise the amount of external light which can get into the machine through the viewing aperture. Ideally it should be used in a darkened room, although total darkness is not necessary.