T-H Marine Atlas Gauge Kit 4in And 8in Models Black. Each number readout represents a 1/4" rise reading from zero to 20. All Atlas jacks are predrilled to fit. Features of T-H Marine Atlas Gauge Kit 4in And 8in Models Made with quality parts The gauge provides a LED all-digital readout Each number readout represents a 1/4" rise reading from zero to 20 All Atlas jacks are predrilled to fit Package Contents: T-H Marine Atlas Gauge Kit 4in And 8in Models T-H Marine FAGK-1-DP: Atlas Gauge Kit 4in And 8in Models Black