iGaging Digital Marking Gauge Marking / Mortise / Divider Precision Digital Marking, Mortise, Divider Or Marking, Depth, Height gauges 3-in-1 Large LCD, 3 Digital reading: inch, metric, inch fractional Hardened Alloy Pin Precise Marking on Steel & Wood Surfaces Measure range: 0-6 Repeatability: 0.0005