This week I’ve been learning about how the Navy created standards for their equipment and kept calibration records. In 1973, the Electronic Test Equipment Classification Board was created in order to control what instruments were used and to eliminate unnecessary electronics. Equipment fits into two categories: general use, meaning the instrument can be used for multiple systems, and special use, which are used on only one system. With all the equipment being used, there needed to be a system to track what instruments are where and when they need to be calibrated. To do this, the Ship Configuration and Logistic Support Information System was created. In addition to tracking instruments, it also helps in listing documentation related to each instrument, training required to operate, and calibration schedules. Calibration is important so that the operator knows that the instrument is functioning correctly. When an instrument is calibrated, it is compared to a known standard. If what the instrument measures is outside of the allowed tolerance, it needs to be adjusted. Once an instrument is calibrated, it is important to ensure that it stays within limits. If a piece of equipment is exposed to heat, moisture, or dropped it may need to be recalibrated.