150mm Caliper SD 94552

Main Features:
– Made of strong Plastic carbon fiber composites, lightweight and durable
Four-way measurement: inside diameter, outside diameter, depth, step
– Zero setting in any position
– With LCD display, easy to read
– Minimum scale to read is 0.1mm / 0.01 inch
– An ideal tool for a broad range of industrial and automotive applications
– Measuring Range: 0 – 150mm / 0 – 6 inch

Digital confusion – There are three main reasons:
– The surface of the protective film is damp or stained with cutting fluid (or other conductive particles).
– Treatment: Wipe the surface of the ruler and the protective film with a dry cloth slightly dampened with absolute ethanol or aviation gasoline. Gently twist a small drop of absolute ethanol or aviation gasoline (be careful not to drip too much, otherwise the liquid will enter the electronic components causing other problems!)
– The copper-clad plate under the protective film is affected by corrosion and blackening.
– Treatment method: Uncover the protective film, polish the surface of the copper strip with high-grade rubber or metallographic sandpaper, and clean it.
– The battery is not enough – treatment: replace a new battery.