Answer :
Final answer:
The tool generally used to calibrate a micrometer or check its accuracy is the A. gauge block.
Explanation:
Gauge blocks are precisely made blocks of metal or ceramic materials that have accurately measured lengths. They are used as a reference to calibrate measuring instruments, including micrometers. When a micrometer is calibrated with a gauge block, the micrometer can be adjusted to ensure its accuracy.
When calibrating a micrometer with a gauge block, the operator places the gauge block between the micrometer's spindle and anvil and adjusts the micrometer until it tightly holds the gauge block without any gaps. This ensures that the micrometer is properly calibrated and accurate.
In summary, the tool to calibrate a micrometer or check its accuracy is the gauge block. Gauge blocks are precisely made blocks of metal or ceramic materials that have accurately measured lengths. By using gauge blocks to calibrate a micrometer, its accuracy can be ensured. The correct answer is A. gauge block.
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A gauge block is commonly used to calibrate a micrometer, ensuring precise and accurate measurements in high-precision engineering work.
The A. gauge block is generally used to calibrate a micrometer or check its accuracy. A gauge block, also known as a gage block, Johansson gauge, slip gauge, or Jo block, is a system for producing precision lengths. The individual gauge block is a metal or ceramic block that has been precision ground and lapped to a specific thickness.
Gauge blocks are used as a reference for the calibration of measuring equipment used in machine shops, such as micrometers, sine bars, calipers, and dial indicators (when used in an inspection role). The blocks have been standardized to a set of internationally agreed numbers. A micrometer calibrated by gauge blocks can provide precise and accurate measurements, essential for high-precision engineering work.
