Used in conjunction with a granite or metal surface plate, the Oxford dual counter height gauge will give you the accuracy you need when laying out work prior to machining. The height gauge can also be used in much the same way as a caliper to help you determine the dimensions of a workpiece. Designed for accurate marking out and taking precise measurements. Measuring head positioned on sturdy twin columns providing highly repeatable height measurements and stability. Easy reading with dual directional negative and positive reading mechanical digital counters. Rotating dial face. Independently set the counters, to zero at any position. Large feed wheel for rapid and precise adjustment. Tungsten carbide tipped scriber for accurate marking out. Manufactured from durable stainless steel. Reading Inch: 0.001"/0.1" Metric: 0.01mm/1mm