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Investigator's Pen
The Kelvin TOP-SET pen is a ballpoint with black ink that has a rugged design, so that it can be used in various industrial settings. It is a bright yellow colour, so that it is also easily seen.
It also shows the TOP-SET indicator categories upon which the Planning chart is based, which act as a framework for the planning and investigation stages of an investigation.
The price is for a pack of ten pens.