Scientific Instruments – Library Mail
Updated January 2001
This Customer Support Ruling
eligibility of scientific instruments at the Library Mail rates of
(DMM) 483.2.4*, states that scientific or mathematical kits,
instruments, or other devices may be mailed at the Library Mail rate
when sent to or from schools, colleges, universities, public
libraries, museums, and herbariums, and to or from nonprofit
religious, educational, scientific, philanthropic (charitable),
agricultural, labor, veterans or fraternal organizations.
barometers, anemometers and similar items qualify under 483.2.4 for
the Library Mail rate of postage when they are mailed under the
conditions prescribed therein.
*See also DMM
183.3.4 and 383.2.4.
United States Postal Service
Washington DC 20260-3436