base unit

base unit, Total:110 items.

The international standard classification for "base unit" includes: Earth-moving machinery , Astronomy. Geodesy. Geography , Energy and heat transfer engineering in general , Acoustics and acoustic measurements , Limits and fits , Information technology (IT) in general .

The Chinese standard classification for "base unit" includes: Codification , Architectural engineering construction machinery , Geotectonic Mapping and Marine Mapping , Technical management , Acoustic Measurement , Basic standards and general methods , Social and public safety in general , Tobacco curing in general , Outdoor water supply and draining engineering , Electromagnetic Measurement .

Professional Standard - Ocean

HY/T 180-2015 The technical guide to verify the tide level on datum

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB 21341-2022 The norm of energy consumption per unit production of ferroalloy
GB/T 17248.1-2022 Acoustics—Noise emitted by machinery and equipment—Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions
GB/T 17851-1999 Geometrical tolerancing Datums and datum system
GB 29447-2022 The norm of energy consumption per unit products of polysilicon and germanium
GB/T 21153-2007 Earth-moving machinery—Units for dimensions performance and capacities and their measurement accuracies
GB/T 35769-2017 Specification for service of the reference stations using global navigation satellite system

Group Standards of the People's Republic of China

T/GSLCA 091号-2019 Unit canteen (group meals) management standards
T/GDTEX 02-2019 The Calculation Method ＆ Quota of Energy Consumption per unit product for Weft-knitted Dyeing and Finishing
T/NAHIEM 33-2021 Standard of non-mosquito unit establishment
T/JSSES 21-2022 Benchmark displacement per unit product of printing and dyeing industry in Taihu Lake Basin
T/DDDT 004-2017 Safety standardization guidelines for elevator users

Shanghai Provincial Standard of the People's Republic of China

DB31/T 595-2021 Energy consumption index unit product for cold store

Hunan Provincial Standard of the People's Republic of China

DB43/T 652-2011 Basic information sharing data element of legal entity
DB43/T 674-2012 Terminology for basic information sharing of legal entities
DB43/T 881-2014 Basic information exchange of legal entities
DB43/T 880-2014 Check the basic information of the legal entity

Professional Standard - Machinery

JB/T 7690-1995 Engineering machinery Unit and measurement accuracy for dimension and performance

Professional Standard - Public Safety Standards

GA/T 1220-2015 Basic data items of jurisdiction information

Sichuan Provincial Standard of the People's Republic of China

DB5104/T 20-2020 Unit canteen management standards

Inner Mongolia Provincial Standard of the People's Republic of China

DB15/T 966-2016 Basic norms for standardization construction of radiation safety management of nuclear technology utilization units
DB1502/T 027-2024 Energy consumption limit per unit product in polysilicon production
DB15/T 1896-2020 Fire Safety Evaluation Standards for Units

Professional Standard - Tobacco

YC/T 148-2002 Cigarettes and cigars-Basic metric units

Shaanxi Provincial Standard of the People's Republic of China

DB61/T 1212-2018 Basic requirements for provincial cultural relics protection units

Zhejiang Provincial Standard of the People's Republic of China

DB3301/T 0283-2019 Evaluation criteria for water-saving units

Jilin Provincial Standard of the People's Republic of China

DB22/T 2172-2014 Terminology for basic information sharing of legal entities

Professional Standard - Water Conservancy

SL 308-2004 Qualification standard of water supply works for villages and towns
SL 308-2004（条文说明） Qualification standard of water supply works for villages and towns(explanation)

Tianjin Provincial Standard of the People's Republic of China

DB12/T 415-2009 Unit fire safety management standards

National Metrological Technical Specifications of the People's Republic of China

JJF 1360-1990 Operating Technical Norm for Alternating Current Primary Standard from 40Hz to 15000Hz

National Standardisation Body (ASRO)

STAS 737/1-1991 International system of units (si). Base and supplementary units
STAS 2701-1979 SI UNIT LENGTH PRIMARY STANDARD

Swedish Institute for Standards

SIS 01 61 32-1971 Quantities and units. Base units, derived units, additional units
SIS SS 01 61 32-1985 Quantities and units - Sl-units and additional units
SIS 01 61 11-1979 Quantities and units — List of Swedish standards
SIS 1-1988 Quantities and units - List of Swedish standards
SIS 01 61 11-1971 Quantities and units. List of Swedish standards

Austrian Standards

ONORM A 6431-1986 Systems of quantities, systems of units; basic quantities, basic measures
ONORM A 6432-1986 International System of Units (SI); SI units, decimal multiples and sub-multiples of SI units, units outside the SI

Electronic Components, Assemblies and Materials Association

ECA RS-161-1956(R1970) Ceramic Based Printed Circuits, Unit Standards for
RS-161-1956 Ceramic Based Printed Circuits@ Unit Standards for
ECA RS-161-1956 Ceramic Based Printed Circuits, Unit Standards for

Gosstandart of Russia

GOST 8.057-1980 State system of ensuring the uniformity of measurements. Procedure of acceptance, maintenance and use of standards and standard measuring means

Chile Instituto Nacional de Normalización

INDITECNOR 2.4-6ch-1946 basic unit
INDITECNOR 2.4-16ch-1951 basic electrical unit

Association Francaise de Normalisation

FD X02-051:1995 Fundamental standards. Units of measurement. Conversion factors.
NF X02-207:1985 Fundamental standards. Quantities, units and symbols of acoustics.
FD X02-003:2013 Fundamental standards - Writing rules for numbers, quantities, units and symbols
NF X02-003:1995 Fundamental standards. Writing rules for numbers, quantities, units and symbols.

GCC Standardization Organization

GSO 1:1990 The international system of units Part 1: Quantities and base,supplementary and derived units.

The Directorate General of Specifications and Metrology (DGSM)

OS GSO 1:1990 The international system of units Part 1: Quantities and base,supplementary and derived units.

Portuguese Institute of Quality

NP 172-1958 basic unit of measurement

Korean Agency for Technology and Standards (KATS)

KS W 0111-1997 Dimensional units for aircraft

German Institute for Standardization

DIN 1314:1966 Pressure; Basic Definitions, Units
DIN 1314:1977-02 Pressure; Basic Definitions, Units
DIN 1314:1971 Pressure; Basic Definitions, Units
DIN 1314:1977 Pressure; Basic Definitions, Units
DIN 81835:2022-03 Anchor chain cables - Basis for calculation units
DIN 81835 E:2020-12 Anchor chain cables - Basis for calculation units
DIN 81835:2001 Anchor chain cables - Basis for calculation units
DIN 81835:2020-12 Draft Document - Anchor chain cables - Basis for calculation units
DIN 81835:2001-03 Anchor chain cables - Basis for calculation units
DIN 1301-1:2010 Units - Part 1: Unit names, unit symbols
DIN 1301-1:2010-10 Units - Part 1: Unit names, unit symbols
DIN 1339:1971 Unit system Magnetic quantity unit
DIN 1301-1 E:2025-03 Draft Document - Units - Part 1: Unit names, unit symbols

Institute of Electrical and Electronics Engineers (IEEE)

IEEE 260-1978 IEEE Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE P260.1/D21, November 2023 IEEE Draft Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE 86-1975 STANDARD DEFINITIONS OF BASIC PER-UNIT QUANTITIES FOR ALTERNATING-CURRENT ROTATING MACHINES
P260.1/D19, February 2023 IEEE Draft Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE P260.1/D20, May 2023 IEEE Draft Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE P260.1/D18, August 2022 IEEE Draft Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE P260.1/D19, February 2023 IEEE Draft Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE P260.1 IEEE Draft Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
ANSI/IEEE Std 260.1-1993 American National Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE Std 86-1975 IEEE Standard Definitions of Basic Per Unit Quantities for Alternating- Current Rotating Machines
IEEE Std 260.1-2004(R2010) IEEE Standard Letter Symbols for Units of Measurement (SI Customary Inch-Pound Units, and Certain Other Units)
IEEE Std 260.1-2004 IEEE Standard Letter Symbols for Units of Measurement (SI Customary Inch-Pound Units, and Certain Other Units)
IEEE 260.1-2024 IEEE Standard for Letter Symbols for Measurement Units (SI and Other Common Units)
IEEE Std 260.1-2024 IEEE Standard for Letter Symbols for Measurement Units (SI and Other Common Units)
IEEE 260.1-2004 Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
IEEE 260.1-1993 Letter symbols for units of measurement (SI units, customary inch-pound units, and certain other units)

Ente Nazionale Italiano di Unificazione

UNI CEI ISO 31-0:1996 Quantities and units. General principles.
UNI S 192-1943 Insulation material standards. symbol. Units of measurement. definition. basic relationship
UNI 0469-1943 Thermal insulation material standards. symbol. Units of measurement. definition. basic relationship
UNI 0553-1954 Italian National Research Council in Metrology (CIM). Basic physical units, main physical units and derived physical units. Standardized list of public surveys

American National Standards Institute （ANSI)

ANSI/IEEE 260.1:2004 Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)
ANSI/IEEE Std260.1:1993 American National Standard Letter Symbols for Units of Measurement ( SI Units, Customary Inch-Pound Units, and Certain Other Units)

American Society for Testing and Materials (ASTM)

ASTM C1209-99a Standard Terminology of Concrete Masonry Units and Related Units
ASTM C1209-01a Standard Terminology of Concrete Masonry Units and Related Units
ASTM C1209-05 Standard Terminology of Concrete Masonry Units and Related Units
ASTM C1209-01 Standard Terminology of Concrete Masonry Units and Related Units
ASTM C1209-05e1 Standard Terminology of Concrete Masonry Units and Related Units
ASTM C1405-19 Standard Specification for Glazed Brick (Single Fired, Brick Units)
ASTM C1405-20a Standard Specification for Glazed Brick (Single Fired, Brick Units)
ASTM C1405-20 Standard Specification for Glazed Brick (Single Fired, Brick Units)
ASTM D646-13 Standard Test Method for Mass Per Unit Area of Paper and Paperboard of Aramid Papers (Basis Weight)
ASTM F651-80 Median method for single-point calibration

British Standards Institution (BSI)

BS ISO 31-1:1992(2004) Basic physical quantities and their units

Underwriter Laboratories of Canada (ULC)

ULC-S333-1993 Standard for Currency Dispensing Units

National Fire Protection Association (NFPA)

NFPA 1321-2025 Standard for Fire Investigation Units

Magyar Szabványügyi Testület

MSZ 7651-1961 Basic principles of building modules. measurement unit

Process Industry Practices

PIP STE03020-2025 Tank Foundation Design Guide (US Customary Units)

American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)

ASHRAE FUN SI CH 37-2001 Units and Conversions(ASHRAE Handbook: Fundamentals, SI Edition)

Standard Association of Australia （SAA）

AS 4878.3:2001 Methods of test for coated fabrics - Determination of total mass per unit area, mass per unit area of coating and mass per unit area of substrate
AS Z46:1967 The international system (SI) units

United States Navy

NAVY MIL-STD-1660 VALID NOTICE 2-1991 DESIGN CRITERIA FOR AMMUNITION UNIT LOADS
NAVY MIL-STD-1660 NOTICE 1-1978 DESIGN CRITERIA FOR AMMUNITION UNIT LOADS

Cooling Technology Institute

CTI STD-145-1995 International System of Units (SI) Conversion Standard