Metrology is essential in scientific research, and scientific research forms the basis of the development of metrology itself. Science pushes out the frontiers of the possible all the time and fundamental metrology follows the metrological aspects of these new discoveries. This means still better metrological tools to enable researchers to continue their discoveries.

Metrology is separated into three categories with different levels of complexity and accuracy. Scientific metrology deals with the organization and development of measurement standards and with their maintenance (highest level). [1] Industrial metrology has to ensure the adequate functioning of measurement instruments used in industry as well as in production and testing processes. [2] Legal metrology is concerned with the accuracy of measurements where these have influence on the transparency of economic transactions, health and safety. [3] Fundamental metrology has no international definition, but it signifies the highest level of accuracy within a given field. Fundamental metrology may therefore be described as scientific metrology, supplemented by those parts of legal and industrial metrology that require scientific competence. -  International Bureau of Weights and Measures (BIPM)
Metrology Resources

TEGAM, Inc. Geneva, Ohio 800-666-1010 TEGAM specializes in the design, manufacture and support of a wide variety of test, measurement and calibration instruments. TEGAM has developed a wide variety of measurement instrumentation, and has enhanced its internal product development with the acquisition of product lines from companies such as Keithley Instruments, Eaton, Tektronix and Pragmatic Instruments. PRODUCTS APPLICATIONS   • RF & Microwave   • RF Power Sensor      Calibration   • Signal Generation   • Nanotechnology      (MEMS) Testing   • Electrical Safety   • Optical Mirror Drive   • Temperature &      Humidity   • Real Time Wire     Plating Monitor   • Impedance &      Resistance   • PXI Digitizer Input      Amplifier   • Ratio Standards   • Accurate LCR Meter     Measurements ACCREDITATION & CERTIFICATION ISO/IEC 17025, ANSI/NCSL Z540-1-1994, ISO 9001 / 2 and other program requirements. A-Cal/Associated Calibration, Inc 714-696-5300 / Anaheim, CA Calibration and repair service company with over 25 years of experience. Providing onsite and in-house calibration. A-CAL is proud to maintain amongst the most extensive scope of accreditations in California. ISO/IEC 17025 accredited, N.I.S.T. traceable, ISO 9000 compliant. Member of ASTM, ASQ certified calibration technicians. Actco Metrology 800-382-0393 / Meadville, PA Performs dimensional metrology for customers world wide, including non-contact video inspection, contact scan probe inspection, dimensional standards calibration, A2LA scope of accreditation. ATT Metrology 888-320-7011 / Redmond, WA Provider of precision measurement and equipment leasing services. Brunel Metrology Services Limited 01761 411247 / UK Offers full calibration service to the highest standards. Czech Metrology Institute +420 545 555 111 / Brno, Czech Republic Calibration of measuring instruments, complex service - outsourcing, information, standardization, analysis of needs, service for manufacturers and users of legally controlled instruments, support of metrological laboratories - interlaboratory comparisons, training, certification of personnel, draft of the quality manual. Detroit Precision Metrology Services 248-853-5888 / Rochester Hills, MI Provides high-level dimensional inspection and third-party certification to help customers meet QS9000 quality standard requirements. Dimensional Metrology Services Pty Ltd +61 3 9376 7100 / Victoria, Australia Offers specialist 3D measurement services to the industry sectors of manufacturing and engineering. Edison Metrology 800-266-2299 / Westminster, CA Provides overhaul, maintenance, testing, repair, and calibration of equipment for a variety of industries. Engineering Metrology Services (EMS) 520-907-0601 / Tucson, AZ Provides worldwide industrial coordinate measurement services, specializing in large-scale metrology of moving structures and mechanisms. Feanor +39.3484121280 / Estonia Research and consulting in dimensional and laser metrology, design and supply of special cutting tools, software for quality and calibration, technical translation services. Gaspardo & Associates, Inc 630-761-8800 / Batavia, IL A full service Chicago-based metrology laboratory, Gaspardo & Associates performs premium high accuracy computer aided measurement, inspection, verification, and reverse engineering services.

Hexagon Metrology, Inc 800-343-7933 / North Kingstown, RI Manufacturer of high-precision coordinate measuring systems and software. Metrology Services 562-988-0277 / Lakewood, CA Serves a variety of industries with calibration services, repair and sales of biomedical, electronic and mechanical test. Metrology Support Services, Inc 317-485-6744 / Fortville, IN New and used CCMs, inspection services, software. MTS Systems 800-328-2255 / Eden Prairie, MN Provides a full range of accredited calibration services for force, pressure, vibration, mass, temperature, torque, electrical, and dimensional test equipment. National Test Equipment, Inc 760-639-1700 / Oceanside, CA New, used, and reconditioned electronic test and measurement equipment sales, rentals, leasing, repair, and calibration. Agilent (HP), Tektronix, Fluke, Rohde & Schwarz, and many more. Omni Calibration Services 800-362-0364 / Cleveland, OH Provides a wide range of calibration and metrology solutions in the areas of dimensional, pressure, torque, thermodynamics, PH, and electronic instrumentation. Precision Calibration Services, Inc 586-779-4516 / Roseville MI Repairs, calibrates and certifies precision metrology equipment. Precision Metrology, Inc 414-351-7420 / Milwaukee, WI Offers a full range of calibration and repair services. Quality Plus, Inc 413-594-5529 / Chicopee, MA Metrology services include gage calibration, first article inspection, repairs, granite plate resurfacing, casting layout, torque calibration, on site calibration, pressure gage calibration, CMM contract inspection. Solartron Metrology +44 (0)1243 833333 / England Designs and manufactures precision dimensional measurement and position measurement transducers & instrumentation. solartronmetrology.com TIC-MS, Inc 314-432-3633 / St. Louis, MO Provides metrology and calibration services. ticms.com Touchstone Measurement Service 765-454-5888 / Kokomo, IN A precision Dimensional Metrology Laboratory that provides 100% precision measurement part inspection, per customer specifications and requirements. touchstone.net/precision-dimensional-metrology-lab-touchstone.htm VolumetricPerformance, Inc 309-579-3130 / Chillicothe, IL Machine tool calibration and repair.