There are nine sections in this guide. Section 1 provides an overview, and serves as
a good introduction if you are new to the field of metrology or to time and frequency
measurements. Section 2 describes the types of timing devices that require calibration.
Section 3 discusses specifications and tolerances. Sections 4 through 7 discuss
calibration methods and their associated uncertainties. Section 8 provides additional
information to help determine if the selected calibration method can meet the required
level of uncertainty, and Section 9 discusses other topics related to measurement
uncertainty. A sample calibration report and references are provided in the appendices