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Mahr Federal Inc., a member of the Mahr Group, has over 150 years of experience providing dimensional measurement solutions to fit customer application needs. We manufacture and market a wide variety of dimensional metrology equipment, from simple and easy-to-use handheld gages to technically advanced measurement systems for form, contour, surface finish and length. Mahr Federal is also well known as a producer of custom-designed gages and a provider of calibration and contract measurement services.

Mahr measuring instruments are used to measure minute length, form and surface deviations on workpieces in precision manufacturing, in mechanical, precision and optical engineering, and in science and research. Mahr’s innovative measuring instruments pave the way for further technical and scientific development. 

Dimensional Measuring Equipment we manufacture includes Calipers, Micrometers, Dial & Digital Indicators; Bore Gages, Snap Gages, ID/OD Gages, other Mechanical Gages, Plug Gages, Air Gages, and Electronic Gages; Height Gages and Dimensional Standards; Calibration Systems and Lab Gages; Form, Surface Roughness & Contour Systems, Gear and Shaft Measurement Systems; Custom Design & Build Gages; Gage Repair, Calibration, and Field Services.

Mahr Federal Products Include:

  • Calipers and Micrometers
  • Dial and Digital Indicators
  • Mechanical Gages
  • Air Gages
  • Electronic Gages
  • Height Gages
  • Length Systems
  • Gage Repair and Calibration
  • Custom Engineered Solutions
  • Portable Surface Roughness
  • Measuring Microscopes
  • Roundness and Form Metrology
  • Surface and Contour Metrology
  • Gear Metrology
  • Shaft Metrology
  • Rotary Stroke Bearings
Mahr Federal supports its customers with factory repair and calibration services, responsive field service and local training. Mahr Federal's calibration laboratories are accredited to ISO/IEC 17025:2005 NVLAP Lab Code 200605-0 (see our Scope of Accreditation for accredited calibration processes on our website).

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Technical Articles

Advances in Air Gaging (Calibration Instruments, Standards and Reference Sources) Over the years, the tooling for air gaging has remained basically the same: steel tubes or rings with precision orifices that set up a pressure/distance curve when in use. As the orifice is... (View Full Article)
Air Gaging For Itty-Bitty Holes (Calibration Instruments, Standards and Reference Sources) Conventional air gaging for measuring inside diameters is typically limited to a minimum size of about 0.060"/1.52mm: below that, it becomes difficult to machine air passages in the plug tooling, and... (View Full Article)