Information about PLSS

The acronym PLSS can refer to:

Public Land Survey System, a method used in the United States to survey and identify land parcels
Primary Life Support System, the life-support backpack of a space suit

The Public Land Survey System (PLSS) is a method used in the United States to survey and identify land parcels, particularly for titles and deeds of rural, wild or undeveloped land. Its basic units of area are the township and section.
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Primary (or Portable) Life Support System/Subsystem, or PLSS, is the "backpack" of a spacesuit. The functions performed by the PLSS include:

regulating suit pressure
providing breathable oxygen

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Plss