Answer :
The accuracy of micrometers, calipers, dial indicators can be checked by a slip gauge. Thus, the correct answer is: b. slip gauge
To check the accuracy of micrometers, calipers, and dial indicators, slip gauges are used. Slip gauges, also known as gauge blocks, are precision ground blocks used to calibrate or check the accuracy of measuring tools. They come in a set of various sizes, each with a known dimension. By stacking these gauge blocks, users can create precise measurements for comparison with the measurement taken by the tool being calibrated.
To check a micrometer's accuracy, for instance, one would measure a gauge block of known dimensions using the micrometer. The measured value should match the known dimensions of the gauge block within an acceptable tolerance range, typically specified by the manufacturer. This process is repeated for various sizes of gauge blocks to ensure the micrometer's accuracy across its measurement range.
Similarly, calipers and dial indicators are calibrated using the same principle. The device under test measures the dimensions of gauge blocks, and the measured values are compared against the known dimensions of the blocks. Any discrepancies indicate the need for adjustment or recalibration of the measuring tool.
Slip gauges provide a reliable and accurate means of verifying the precision of micrometers, calipers, and dial indicators, ensuring consistent and accurate measurements in various industrial and manufacturing applications.
Therefore, the correct answer is: b. slip gauge
Final answer:
The accuracy of micrometers, calipers, and dial indicators is commonly checked using slip gauges, which are precision ground to provide a reliable standard for calibration.
Explanation:
The accuracy of micrometers, calipers, dial indicators can be checked by using slip gauges. Slip gauges, also known as gauge blocks, are precision ground and lapped measuring standards. They are used for calibrating measuring equipment and for setting precise distances in machining processes. Unlike other gauges, such as feeler gauges, ring gauges, or plug gauges, slip gauges provide a wide variety of precise lengths by combining blocks of different lengths in a stack.
A slip gauge is particularly suited for the calibration of micrometers and vernier calipers due to its high level of accuracy, making it an essential tool in maintaining the precision of measurements in engineering and manufacturing environments. When calibrating these instruments, a known standard length from the slip gauge is used to ensure the tool reads accurately at that specific length.
