Rainbow Rubbing 'Gg'

Circular rubbing plaque in a choice of colours. 90mm diameter x 8mm.  Suitable for indoor or outdoor use.  Pre-drilled countersunk fixing holes.  Can be used with pencils or wax crayons.  

Suggestion: Letters can be used in a sequence to create an 'orienteering' style route or to spell out a word or create an anagram, forming a puzzle for trail followers to solve.