Legal Metrology Department
Legal Metrology Department
The Weights and Measures Department was renamed according to the OIML, located in Paris, (International Organization for Legal Metrology) instruction as Legal Metrology Department. The Department is working under Food & Consumer Affairs ministry.
Definition of Legal Metrology
Legal metrology comprises all activities for which legal requirements are prescribed on measurement, units of measurement, measuring instruments and methods of measurement, these activities being performed by or on behalf of governmental authorities, in order to ensure an appropriate level of credibility of measurement results in the national regulatory environment.
Government of Kerala
Kerala is a state in the Union of India. The Legal Metrology Department was formed in 1961 and Mr Adoor Prakash is the minister (Legal Metrology, Coir).
Official website
The periodical verification and stamping of weight and measures; licensing of dealers, repairing and manufacturing of weights and measures; registration of users of weights; and prosecution of offenders are the basic duties of the Department of Legal Metrology.
Legal Metrology's motto : No less no more, but just exact.
International System of Units
International System of Units
If people of every region use a different unit for weighing, the trade between these two regions will create problems. Now a days inter continental trade is common and the use of a common unit in measurement become essential.
SI (System International) presctibe the unit and it's symbol for international use.
Lenth, mass, time, temperature, volume etc are considered to be basic quantities. The standard unit for the measurement with it's symbol in bracket are
Length : metre (m)
Mass : gram (g)
Time : second (s)
Temperature : kelvin (K) also degree celcius (°C)
Volume : litre (l)
Units are always written singular. There is not dot after the unit symbol. One character space is provided between numeral and unit or it's symbol. Unit with the name of a scientist is always written in lowercase, while the symbol will be in Uppercase.
Eg :
Force : newton (N)
Energy : joule (J)
Power : watt (W)
Voltage : volt (V)
Current : ampere (A)
Prefixes permitted to use with standard symbols are
c - centi (10 ^-2)
m - milli (10 ^-3)
k - kilo (10 ^3)
M - mega (10 ^6)
Prefixes are helpful to write large and small measurements convienently.
Eg :
1,000 m = 1 km
1,000 ml = 1 l
11,000 V = 11 kV
1,000 mg = 1 g
1, 000 kg= 1 t (t, symbol for ton)
Length and Area conversion
Length
1 mile = 1.609 km
1 yard = 0.9144 m
1 foot = 0.3048 m
1 inch = 25.4 mm
1 km = 0.6214 mile
1 m = 1.0936 yard
1 m = 3.2808 feet
1 mm = 0.0394 inch
Area
1 sq. mile = 2.59 km2
1 acre = 0.4047 hectare
1 acre = 4046.86 m2
1 sq. yard = 0.8361 m2
1 sq. foot = 0.0929 m2
1 sq. inch = 645.16 mm2
1 km2 = 0.3861 mile2
1 km2 = 247.105 acre
1 hectares = 2.4711 acre
1 m2 = 10.7639 feet2
1 mm2 = 0.0016 inch2
Volume, weight and temperature conversion
Volume
1 gallon = 4.5461 litre
1 US gallon = 3.785 litre
1 pint = 0.5683 litre
1 cu. inch = 16.3871 cm3
1 litre = 0.22 gal
1 litre = 0.2642 US gal
1 litre = 1.7598 pint
1 m3 = 219.969 gal
1 m3 = 35.3147 feet3
Weight
1 ton = 1.016 tonne
1 lb = 0.4536 kg
1 oz = 28.3495 g
1 US ton = 0.9072 tonne
1 tonne = 0.9842 ton
1 tonne = 1.1023 US ton
1 kg = 2.2046 lb
1 kg = 35.274 oz
http://www.thecultureconcept.com/cir...d-necklace.jpg
Queen Victoria's diamond necklace. The largest diamond weighs 11.25 carat (1 Carat = 0.2 gram).
Temperature conversion
deg. F= deg. C x 9/5 + 32
Other Standard and Derived units
Luminous intensity : candela
Molar volume : mol (mole)
Pressure : newton (N)