Obsolete unit of ship tonnage, 1 TR =100 Imperial cubic feet.

Obsolete unit of ship tonnage, 1 TR =100 Imperial cubic feet.

Related Terms 
POLARIZABILITY
The electric dipole moment induced in a system, such as an atom or molecule, by an electric field of unit strength.

PLI
A unit of line density (mass per unit length) equal to 1 pound per inch, or approximately 17.8580 kilograms per meter.

PINT
Abbreviated pt. 1. A unit of volume, used in the United States for measurement of liquid substances, equal to 1/8 U.S. gallon, or 231/8 cubic inches, or 4.73176473 10 4 cubic meter. Also known as liquid pint (liq pt). 2. A unit of volume used in the United States for measurement of solid substances, equal to 1/64 U.S. bushel, or 107,521/3200 cubic inches, or approximately 5.50610 10 4 cubic meter. Also known as dry pint (dry pt). 3. A unit of volume, used in the United Kingdom for measurement of liquid and solid substances, although usually the former, equal to 1/8 imperial gallon, or 5.6826125 10 4 cubic meter. Also known as imperial pint.

PILE CAP
A mass of reinforced concrete cast around the head of a group of piles to ensure that they act as a unit to support the imposed load.

PIE`ZE
A unit of pressure equal to 1 sthe`ne per square meter, or to 1000 pascals. Abbreviated pz.

PIECE RATE
Wages paid per unit of production.

PERCH
Also known as pole; rod. 1. A unit of length, equal to 5.5 yards, or 16.5 feet, or 5.0292 meters. 2. A unit of area, equal to 30.25 square yards, or 272.25 square feet, or 25.29285264 square meters.

PERCENTCOMPACTION
Theratio,expressed as a percentage, of dry unit weight of a soil to maximum unit weight obtained in a laboratory compaction test.

PENNYWEIGHT
A unit of mass equal to 1/20 troy ounce or to 1.55517384 grams; the term is employed in the United States and in England for the valuation of silver, gold, and jewels. Abbreviated dwt; pwt.

PARTICULATE MASS ANALYZER
A unit which measures dust concentrations in emissions from furnaces, kilns, cupolas, and scrubbers.

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