Mahr Inc.

1144 Eddy Street
Providence, RI 02905 US


A Message from Mahr Inc.

About Mahr Inc.

When customers are faced with a metrology need, they turn to Mahr Inc., for unmatched industry expertise.

How can Mahr Inc. assist with your measurement application?

With the introduction of the MarSurf® XR 1 surface measuring system, Mahr has bridged the gap between portable surface measuring devices and larger, full-featured, PC-based surface measurement and evaluation systems.

How can Mahr Inc. assist with your measurement application?

Mahr Inc. has added a new MarConnect Integrated Wireless data transmission system to its family of MarCator Digital Indicators at prices that compete with typical wired systems.

How can Mahr Federal assist with your measurement application?

The new MarSurf® One App from Mahr Federal allows an Android Smartphone or Tablet to control the surface measurement drive unit.

As Seen In Production Machining

MarSurf GD Series Offers Speed, Flexibility and Ease of Use for Roughness Measurement
140- mm and 280-mm sizes enable measurement of applications.

Joe Gibbs Racing Team Extends Partnership with Mahr
Mahr’s tools help Joe Gibbs Racing deliver the highest quality and performance.

Mahr Micrometer Integrates Wireless Data Transmission
Digital micrometer measures 10 times faster than a standard micrometer.

Indicator gage

Multimar 36-B Gage Measures IDs and ODs on the Shop Floor
Mahr Inc.’s Multimar 36-B is a bench-mounting indicator gage that measures IDs and ODs on the shop floor that is available in both T-plate and V-plate styles.

Optimar 100

Optimar 100 Dial Indicator Expands with Upgrade Kit
Mahr Inc. has expanded the Optimar 100 with an upgrade kit that makes working with the measuring instrument safer and faster with a camera that automatically records the indicated values of the test indicators and forwards them to software for processing. 

Mahr Inc. Promotes Don Foisy to Director of Operations
Mahr Inc. has promoted Don Foisy to director of operations where he will be responsible for overseeing the engineering, manufacturing, planning and facilities departments. 

Mobile roughness measuring unit

MarSurf PS 10 Mobile Unit Ensures Measuring Results
Mahr Federal’s MarSurf PS 10 mobile roughness measuring unit has a smartphone-like 4.3” TFT touchscreen display and can measure 31 roughness parameters, offers a list of favorite functions in the display, and provides laboratory-level performance on the shop floor.

Mahr Appoints Quality Manager and Promotes Two Employees
Mahr Inc. has hired Lara Rapport as quality manager and promoted two employees, Anthony Clang to the position of laboratory technical manager and Dave Perron to manufacturing engineering supervisor.

Interferometer tower

Fizeau Interferometer Measures Radius and Form Deviations
Mahr Inc.’s MarOpto MT 100 is part of a series of Fizeau interferometer towers for measuring optics directly in production that are supported by Intelliwave software to allow measurement of both radius and form deviations.

Brett Green

Mahr Inc. Appoints Brett Green as VP Sales Americas
Mahr Inc. has hired Brett Green as vice president sales Americas, with his responsibilities to include overall management of the American sales region as well as general management of the company’s headquarters and manufacturing facility in Providence, Rhode Island. 

Bore gage setting tool

Bore Gage Setting Tool Provides Reference Master
Mahr’s Multimar 844 S bore gage setting tool uses gage block combinations and a hand clamping mechanism to set instruments with a gage block stack assembly in a clamp with jaws at both ends to provide an accurate reference master.

Optimizing CNC Legacy Parts with CAM
One day’s work resulted in productivity improvements that allow the equipment to pay for itself, while leaving spare capacity for additional production work.

The Difference Between Ra and Rz

The Difference Between Ra and Rz
While it is best to measure using the parameter specified in the print, there are rules of thumb available that can help clear up the confusion and convert Ra to Rz or Rz to Ra.

Product Categories of Mahr Inc.

Calibration Equipment
Calibration Software
Chucks, Jaw Type
Clamps & Fixturing Devices
Comparators, Optical & Other
Data Collection Devices for Gaging, SPC, etc.
Flatness Measuring Equipment
Gages, Digital
Gages, Mechanical
Gear Inspection
Gear Inspection Equipment
Laser Measurement Systems
On-Machine Probes
Probes, Electromechanical
Quality & Measurement
Roundness Measuring Equipment
Surface Finish Measuring Equipment
Surface Plates
Vision Systems

Trade Names

Mahr Federal
Pocket Surf