Digital Vernier Height Gauge

Milling Machine Operators: When milling structures such as planes, grooves and steps, digital vernier height gauges are used for measurement and scribing. Before starting the milling work, milling machine operators can use height gauges to scribe the processing contour lines on the surface of the work piece to determine the starting position and depth range of milling. For instance, when processing the guide rail plane of the machine tool bed, the milling height can be set by using height gauges to ensure the flatness and height precision of the guide rail plane.

Drilling Workers: In drilling operations, especially when drilling inclined holes or drilling holes on the surface of work pieces with steps, drilling workers need to use height gauges to determine the height of the drilling positions. By accurately marking the center lines of the holes, the precise positions of the drilled holes can be ensured. For example, when manufacturing the templates of molds, drilling workers need to use height gauges to determine the height positions of the cooling holes to ensure the effectiveness of the cooling system.

Mechanical Inspectors: Personnel responsible for the quality inspection of mechanical products need to use height gauges to measure whether the height dimensions of the products meet the standards. They will conduct random inspections on various parts of the products to check whether the dimensions such as the heights and thicknesses of parts are within the tolerance ranges. For example, in the quality inspection of automobile parts, mechanical inspectors use height gauges to check the height dimension precision of components such as engine blocks and transmission housings.

Mold Designers (During the Mold Manufacturing Stage): In the initial stage of mold manufacturing, mold designers may need to use height gauges in person to check whether the design dimensions match the actual processing dimensions. Especially after the processing of templates and the rough processing of mold cavities are completed, designers can measure with height gauges to promptly detect the deviations between design and processing, so as to adjust the subsequent processing steps.

Sheet Metal Workers: In the sheet metal processing process, height gauges are used to measure the thickness of sheets and also to scribe on the sheets to determine the positions and heights of bending lines. For example, when making metal filing cabinets, sheet metal workers use height gauges to measure the thickness of sheets to ensure that the selected materials meet the design requirements. Meanwhile, before the bending operation, use height gauges to scribe bending lines on the sheets to ensure the accurate shapes and dimensions of the parts after bending.

Precision Mechanical Assembly Workers: In the precision mechanical assembly process, height gauges are used to measure and match the heights of components. For example, when assembling an aero-engine, the height precision requirements of various components are extremely high. Assembly workers use height gauges to ensure the height matching of turbine blades, bearing housings and other components to guarantee the performance and reliability of the engine.

Cleaning Work：Use a dry and clean cloth (which can be slightly moistened with cleaning oil) to repeatedly wipe the surface of the protective film, the body of the gauge, the measuring jaws and other parts to remove dust, oil stains and impurities on the surface, so as to prevent them from affecting the measurement accuracy. For the measuring platform: Check whether the flat plate or workbench surface on which the height gauge is placed is clean, flat, free of burrs and scratches that may affect its use. If there are any, the measuring platform needs to be cleaned or replaced.

Appearance Inspection：Check whether the appearance of the digital vernier height gauge is intact, and whether there are obvious signs of wear, deformation, bumps or scratches. If any damage is found, it should be repaired or replaced in a timely manner to avoid affecting the measurement results.

Component inspection: Check whether the engraved "zero position" lines on the body of the gauge and the gauge frame are aligned. You can lower the measuring jaws until the measuring surface and the bottom surface of the base are in contact with the flat plate at the same time and then observe. Check whether each button and the display screen are working properly. When the gauge frame is fixed with fastening screws, the reading of the height gauge should not change. For the height gauge with a dial, check whether the dial glass is transparent and whether the pointer jumps or not.

Suitable temperature: The working environment temperature of the height gauge is generally more suitable between 5 °C and 40 °C. Avoid using it in an environment with too high or too low temperature to prevent measurement errors caused by thermal expansion and contraction.

Zero calibration: Place the height gauge on a horizontal workbench surface, move the measuring jaws to make slight contact with the platform surface, and the displayed value should be zero. Otherwise, press the corresponding zero-clearing button to make the display zero. For some height gauges, it is also necessary to rotate the dial to make the zero engraved line coincide with the pointer to achieve double zeroing.

Precision calibration: If there are doubts about the precision of the height gauge, you can use standard calibration blocks with known heights or other accurate measuring tools for calibration to ensure that the measurement error of the height gauge is within the allowable range. For height gauges that have not been used for a long time or have been repaired, the calibration work is particularly important.