The 15A31B10 is a 100-turn digital Counting Dial with plastic body and satin transparent anodize dial composition. Complete revolutions of turning knob percent of revolution, the unit registers a total count of 999. The indication shall increase with clockwise rotation of the turning knob. The accuracy graduation lines adjacent to the numerals on the right digit wheel indicate settings 0.2% of a revolution of the turning knob. Dial phased by rotating the exposed component shaft to correspond with the desired reading on the dial prior to tightening the set screws.