Odometer

An odometer comprising a plurality of odometer wheels rotatable on a first shaft, each odometer wheel having teeth around the circumference of one side and at least one tooth positioned on the circumference of the other side;

• a cam associated with each odometer wheel and rotatable therewith;
• a pinion positioned between each pair of adjacent odometer wheels and rotatable on a second shaft having an axis substantially parallel to that of the first shaft, each pinion having teeth around a periphery thereof engageable with the at least one tooth of one odometer wheel and with the teeth of the adjacent odometer wheel;
• a reset mechanism pivotable about an axis substantially parallel to, and spaced from, the axis of the second shaft, the second shaft being mounted on the reset mechanism such that pivoting of the reset mechanism moves the pinions into and out of engagement with the associated odometer wheels, the reset mechanism comprising a finger associated with each shaped cam and engageable therewith to rotate the odometer wheels to a predetermined reset position on pivoting of the reset mechanism to move the pinions out of engagement with the associated odometer wheels;
• and a single spring having a torsion section acting on the reset mechanism to bias the pinions into engagement with the associated odometer wheels and a compression section for biasing the pinions into a predetermined axial position relative to the associated odometer wheels.