All Metal Digital Caliper 0 6"Measuring Tool, Micrometer Caliper with Auto Off Feature, Interchangeable Between inches and millimeters for DIY Household and 3D Printing 6" Stainless Steel industrial EMERGENCY RESPONDERS: This first aid industrial EMERGENCY RESPONDERS: This first aid CPR barrier kit is built for an emergency to help you respond to any type of breathing emergency effectively and bright colored pouch labeled 'CPR' for easy visibility during an emergency situation flexible frame and wide non slip head strap make these swimming goggles super comfy for lasting water fun The digital calipers can measure depth step internal outer diameter with two sets of jaws ( upper and lower ) and a depth probe Improved anti drop battery compartment is splash proof and comes with battery plus two more batteries are included