The present invention provices a counter comprising: a first member disposed in at least a partial helical turn about a longitudinal axis of an entity whose movements and/or contents are to be counted, said first member having an indicium or indicia indicative of a count； a second member extending generally in the direction of said longitudinal axis, said second member being operatively disposed in overlapping relationship under and over one or more portions of said at least partial helical turn of said first member； and means to effect relative movement between said first and second members, said movement comprising a relative incremental rotation about said longitudinal axis.
