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Grand Rapids Metrology is dedicated to providing products and services in adherence with the strictest and most relevant quality standards in the industry.  As one of the few metrology and scale companies to employ a full-time Director of Quality, we work diligently to continuously improve our methods to ensure customer equipment remains in peak performance and in observance with company-specific quality requirements.

GRM is ISO/IEC 17025 accredited through A2LA (American Association for Laboratory Accreditation). A2LA is a non-profit, non-governmental, public service membership society with a mission to provide world-class accreditation and training services for testing and calibration laboratories. Our accredited scope of capabilities has expanded every year since our entrance into the non-weighing metrology market in 2009, and we plan to continue our expansion until we can service every piece of measurement equipment in the market.

Within our Grand Rapids headquarters is a 2,000 sq. ft. calibration lab built to test and certify metrology equipment in a temperature and humidity-controlled environment.  We also offer on-site calibrations for most equipment, using our fully-equipped service vehicles stocked with NIST traceable standards and common repair parts.

If you don’t see your equipment on our scope, don’t worry! We have partnered with several accredited calibration labs to provide a full scope of calibrations.

State of Michigan Requirements

Grand Rapids Metrology works very closely with the State of Michigan’s Weights and Measures program to ensure every scale we place into service as NTEP / Legal for Trade is done so in accordance with the law.  The goal of the Weights and Measures Program is to make sure customers and companies get a fair measure of what they are buying or selling.  The law applies to all persons and/or companies that use scales and other measurement devices for commercial or law enforcement purposes.

With almost 100 years of experience in the weighing industry, GRM specializes in the sale and service of NTEP / Legal for Trade measurement equipment. All new Legal for Trade equipment must be placed in service by a state-registered technician.  You may then use the equipment immediately for commercial use, with no need to wait for state inspection. GRM employs over 35 state-registered technicians throughout the state and remains the premier source for NTEP, repair and calibration needs.

To learn more about the State of Michigan requirements for Legal for Trade equipment, visit their website below.

State of MI Requirements

Scope of Capabilities

Using our NIST traceable standards and A2LA accredited methods, Grand Rapids Metrology is able to perform on-site or in-lab calibration services on a wide variety of measurement equipment.


Battery Charging Systems, Capacitance Meters, Clamp-On Ammerters, Digital Multimeters, Decade Resistors,  Hipot / Insulation Testers, Loop Calibrators, Megometers, Milliohm Meters, Oscilloscopes, Power Supplies, Scope Meters, Tachometers, Welders

Dimensional Test Equipment

Angle Blocks, Bore Gages, Calipers, Cylindrical Pins, Cylindrical Ring Gages, Dial Indicators, Feeler Gages, Gage Balls, Gage Blocks, Height Gages, Micrometers, Optical Comparators, Rulers, Snap Gages, Surface Plates, Thread Plugs, Thread Rings, Thread Wires

Temperature & Humidity

Autoclaves, Chart Recorders, Data Loggers, Environmental Chambers, Freezers, Hygrometers, Incubators, Oven Mapping, Ovens, RTD, Temperature Controllers, Thermocouples, Thermometers, Water Baths

Mechanical Test Equipment

ASTM E4 Calibration, Concrete Testing Units, Dynamometers, Force Gages, Hardness Testers, Hydraulic Pressure, Load Cells, Test Stands, Torque

Scales & Balances

Analytical Balances / Lab Scales, Conveyor Scales, Counting Scales, Crane Scales, Floor Scales, Rail Scales, Tank / Hopper Scales, Truck Scales


Crane Testers, Compression Testers, Heavy Capacity, Mass / Test Weights, Rental Equipment, Wheel Weighers

Contact Us! 800.348.5701

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