Calibration tools are instruments used to adjust and verify the accuracy of measuring devices. They ensure that tools like thermometers, pressure gauges, and scales provide precise readings. Regular calibration helps maintain quality and safety in various industries, including manufacturing and healthcare. These tools can include calibration weights, reference standards, and calibration software. By using these tools, technicians can compare the measurements of a device against a known standard, making necessary adjustments to ensure accuracy. Proper calibration is essential for reliable data and effective decision-making in scientific and industrial applications.