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Clear writing pencil for the exclusion of the group incl. black light test lamp and batteries.
You write Grabovois number sequines, for example, on objects (paper, bed, door frame, cupboard etc.) and can check with the black light lamp what you have written. Sense and purpose is, the other cannot see and you must not justify yourselves and exclude questions of the group and support therefore the effect and therefor take no energy away!!
The pencil or the writing / transparencies of the colour is:
- water resistantly (not washing party with cleaning agents)
Pencil, black light test lamp as a key follower and battery for the lamp!