.Material: Carbon steel(#45)
 .Dual Reading Scale: Metric & Inch Size 
 mode reading.
 .Range:0-12"/0-300mm
 .Accuracy:0.002 in/0.04mm
 .Include：
 -1x 12" Carbon Steel Caliper
 -1x 300mm 401 Stainless Steel Ruler(Metric)
 -1x Cleaning Cloth
 -1x instructions
 -1x box
Multi-Function:can be used to measure the outside diameter(OD), inside diameter(ID), depth, and step value of an exquisite item; widely used in metalworking, woodworking, DIY measurement, scientific research and in industries where the highest accuracy is required.