Features Accurate Measuring Tools Each base unit is divided into 10 parts Vernier caliper with storage case and instructions More Accurate Measuring Tools Vernier caliper measures in tenths of an inch and tenths of a cm for greater accuracy. Thread Standard (Inch and Metric) A sticker on the back indicates the Whitworth and Metric thread standard. Fixed Thumb Rest The thumb rest of the caliper cannot slide like the dial of the digital caliper. It is designed to make it easier for people to use one hand to hold the caliper and adjust the position when measuring objects. 4 Measurement Methods Outer Diameter Measure the outer diameter or length of objects with the jaw. Inside Diameter Measure the inside diameter of objects with the upper jaws. Depth Measurement Measure the depth of objects with the depth gauge blade. Height Measurement Measure the step height using the caliper step. Box Contents: 1 x Stainless Steel Vernier Caliper 1 x Black Storage Case Tips Keep the surface clean, prevent liquid from entering the slider, and do not immerse it in liquid. The surface should be cleaned gently with medical alcohol. Use a small amount of micrometer lubricant to wipe down the datum end surface and sliding parts. Store the caliper in a clean place with constant temperature and humidity, avoid high temperature, high humidity, dusty and oily places. (Fixed with storage case) [Material Construction] The vernier caliper is made of carbon steel, and this carbon steel measuring tool is strong and durable, can ensure strength and durability, has a long life. [Accurate and Accurate] measurement range: 0 - 150mm (6 inch); Resolution: 0.02 mm (0.001 inch); Accuracy: 0.03 mm (0.001 in). [Easy to Read] The digital caliper has an accurate scale and a clear scale. This scale makes this carbon steel measuring tool easy to measure and read the value, bringing more convenience to your work. [With Storage Case] High-precision vernier calipers, with a storage box, convenient to take and easy to carry, this kind of carbon steel measuring tool with accurate scale is easy use. [Wide Range Of Applications] Our stainless steel vernier caliper can measure not only the length, but also the width, height, depth, inside and outside diameter of goods.