Features Precise measuring tools Each basic unit is divided into 10 parts Footslide with storage case and instructions More Precise Measuring Tools The footSlide measures in tenths of an inch and tenths of a cm for greater precision. Standard Thread (Inch and Metric) A sticker on the back indicates the Whitworth and metric thread standard. Fixed thumb rest The thumb rest of the footslide cannot slide like the foot wheeldigital slider. It is designed for ease of usea persons hand to hold the footslide and adjust the position when measuring objects. 4 Measurement Methods External Diameter Measure the outer diameter or length of objects with the jaw. Inner 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 FootStainless Steel Slide 1 x Black Storage Case Advice 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 the reference end surface and sliding parts. Store the caliper in a clean place andconstant temperature and humidity, avoid high temperatures, high humidity, dusty and oily places. (Fixed with storage case) Material Manufacturing:Footcaliper is made of carbon steel, and this carbon steel measuring tool is strong and durable, can ensure strength and durability, has a long service life. Precise and Precise:measuring range: 0 - 150 mm (6 inches); Resolution: 0.02 mm (0.001 inch); Accuracy:0.03 mm (0.001 in). EasyRead:Footdigital slider has a precise ch and a clear ch. This ch makes this carbon steel measuring tool easymeasure andread value, bringing more convenienceyour work. With Storage Case:Feethigh precision slide, with a practical storage boxtake and easycarry, this type of carbon steel measuring tool with precise ch is easyuse. Wide Range of Applications:our footStainless steel slide can measure not only the length, but also the width, height, depth, inner and outer diameter of the goods.