multimeter

An instrument for measuring electricity (volts, amps, ohms) that is widely used and available in numerous shapes and sizes. An analog multimeter displays results by moving a pointer across a printed scale. The movement of the pointer helps to show gradual changes, but is less precise than its digital counterpart. A digital multimeter (DMM) displays the exact measurement on a numeric LCD or LED readout.

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Complete directory of U.S. Postal Service regulations concerning domestic mail services. It is published by the USPS and utilized by all major mailers. The manual is available for a fee on a subscription basis from the Superintendent of Documents, Government Printing Office, Washington, D.C., 20402-0001. Updates are issued as necessary for changes in regulations. It has recently undergone a major revision to make it easier to understand.