Digital Swimming Pool PH Tester Drinking Water Quality Quick

Material:Measuring tools made of quality stainless steel,sturdy,wear resistant,and durableFeature:Vernier caliper with a limit nut,upper and lower platens,and auxiliary wheels,the marking is more accurate,and it can be rotated according to the left and right movement of the ruler bodyMetric And Inch:Rulers synchronously display both metric and Inch units,and the scale is clear and easy to read,the measurable range is 0-200mmAppearance:The measuring of the caliper is finely processed to decrease errors and measure more accuratelyPractical:Parallel calipers come with a storage pouch and an alloy scribe pin(suitable for marking on iron,steel,and wood materials),convenient to use and carry around