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Mahr Height Gage Provides Reliable Measurement Performance

Digimar 816 CLT height gage is equipped with an intuitive touchscreen, ergonomic handles and dynamic measuring functions, designed to offer performance and ease of use.

Mahr Contour Measurement Device Features Specialized Probe System

The MarSurf CD 140 AF is designed to measure many different kinds of workpieces, making it suitable for a wide range of measurement tasks.

Mahr Inc. Appoints New General Manager, Sales

John Roberts will oversee Mahr’s Engineered Solutions business, as well as marketing, product management, applications engineering, service and distribution.

IMTS 2022 Review: Attention to Automation Extends Beyond the Robot and the Machine

The advance toward increasingly automated machining can be seen in the ways tooling, workholding, gaging and integration all support unattended production. This is the area of innovation I found most compelling at the recent International Manufacturing Technology Show.

Modernizing Metrology Interfaces

Wireless transmission and capacitive touch interfaces mark the next generation of traditional metrology devices.

Electronic Digital Comparators Operate Reliably Anywhere

IMTS22: The Millimess 2000 W(i) and 2001 W(i) digital comparators from Mahr offer maximum measuring reliability even in harsh workshop environments.

Preparing SQC For Machinists and Future Requirements

The current complexity of machines means machinists are already busy — assigning them new, expanded SQL duties (such as gage identification) will require gages and processes to prioritize accessibility.

George Schuetz Receives 2021 ASQ Hromi Medal

George Schuetz, director of precision gages at Mahr Inc. and MMS columnist, has been awarded ASQ’s 2021 Hromi Medal to recognize his contributions to metrology.

January 2019 Product Spotlight: Measurement and Inspection

This month’s Modern Equipment Review Spotlight focuses on equipment used for measuring and inspection, including gaging and tool setting.

NASCAR "Garage" Display Invites Hands-On Measurement

The company's interactive display invites readers to measure engine cylinder bores and take photos in front of a race car.

Mahr’s Booth Experience to Highlight Speed, Productivity and Precision

Mahr Inc. will be highlighting the theme of speed, productivity and precision in its booth, 135608, at the International Manufacturing Technology Show (IMTS) 2018.

Contour Drive System Speeds Throughput, Improves Accuracy

IMTS 2018: Mahr Inc’s MarSurf contour drive (CD) is the first in a series of surface finish and contour measurement systems.

Gaging System Can Be Used without Special Programming Knowledge

MarWin Millimar Cockpit Software and Millimar N 1700 Modules from Mahr Inc, an interactive new MarWin-based gaging software and modular-based gaging system that allow users to configure and implement simple to complex gaging solutions quickly and cost effectively.

Mahr Inc. Introduces MarSurf CM Optical 3D Microscopy

Mahr, a provider of dimensional metrology solutions, introduces a series of MarSurf CM optical 3D surface metrology systems for industry and research.

Manufacturing News of Note: May 2018

Mahr to offer confocal microscopes, CGTech joins an R&D outfit and other industry news.

Camera Speeds Testing of Dial, Digital Indicators

Mahr Inc. has expanded its Opitmar 100 solution for testing dial and digital indicators, test indicators and dial comparators with image processing to automate the testing of measuring equipment.

Modular Gaging Software Enables Cost-Effective Implementation

Mahr Inc.’s MarWin Millimar Cockpit Software and Millimar N 1700 modules enable users to configure and implement gaging solutions quickly and cost-effectively.

Mahr Inc. Appoints Vice President of Sales, Americas

Brett Green comes to Mahr Inc. USA from the United Kingdom, where he served in a sales and marketing directorship for Hexagon Manufacturing Intelligence.

Measurement Products Provide Digital Connectivity

This month’s Modern Equipment Review Spotlight focuses on equipment and software for measurement and inspection.

July 2016 Product Spotlight Slideshow: Measurement and Inspection

This month’s Modern Equipment Review Spotlight focuses on equipment and software for measurement and inspection.

Digital Calipers, Indicators Enable Wireless Data Transmission

Mahr Federal wireless data transmission capability is now integrated within its families of MarCal digital calipers and MarCator digital indicators.

Versatile ID/OD Gage Provides Numerous Attachments, Depth Stops, Anvils

The updated Multimar 844 T universal measurement gage from Mahr Federal is designed for gaging IDs and ODs ranging to 2,500 mm with high sensitivity and accuracy.

Surface Finish Gage Offers One-Button Calibration

Mahr Federal’s latest version of its Pocket Surf portable surface finish gage includes updated electronics and additional features.

Digital Calipers Equipped with Wireless Data Transmission Capabilities

Mahr Federal has added wireless data transmission capabilities to its MarCal 16 EWRi digital calipers with a low-power, built-in transmitter.

Optical Measuring System for Turned Workpieces

The MarShaft Scope Plus from Mahr Federal is a high-precision, fully automatic optical measuring system for dimensional testing of turned workpieces that is said to be twice as accurate as its previous version.

Digital Calipers Offer Measurement Versatility

Mahr Federal’s MarCal digital calipers are designed to accommodate a variety of outside, inside, depth, step and compound measurements.

Modular Gaging for Short-Run Production

Gaging systems that consist of reconfigurable modules promise flexibility for high-precision inspection of short-run shaft production.

Portable Air Gage with Digital Indicator

Mahr Federal’s new Micro-Dimensionair II portable air gage incorporates the enhanced Micro-Maxum II digital indicator and an interchangeable handle to provide accurate, convenient readouts at the measurement site.

Bearings Designed for Rotary and Linear Movements

Mahr Federal’s MarMotion high-precision linear and rotary stroke bearings are designed for applications requiring linear, rotary and combined movements.

Length Measurement System for Thin-Walled Parts

Mahr’s Precimar PLM 600-2 high-precision length measuring system is capable of measuring parts in their undeformed state.

A Half-Century of Dimensional Gaging

Advances in measurement technologies have both resulted from and contributed to positive changes in a variety of industries.

Cylindricity Machine with Automated Probing System

The MMQ 200 Formtester cylindricity machine features an automated T7W probing system.

Universal Length Measuring Instrument

The Linear 100 is a high precision, universal length measuring instrument for rapid, high-accuracy internal and external measurements directly on the shop floor. The instrument features a direct measuring range to 2″ (50 mm) and an application range to 4″ (100 mm). Key features include an adjustable 3″ × 3″ (76 × 76 mm) measuring table for precise position adjustment of the part when measuring ODs.

Measuring Taper For Toolholders And Spindle Applications

Companies concerned about strict quality requirements regularly check toolholder tapers for wear or inaccuracy because these conditions can jeopardize the results of a critical operation. However, a shop can check tapers quickly and reliably with air gages. These devices can be used effectively without special operator training. For measuring taper in a production environment, few other methods can match the speed and performance of air, as multiple-circuit air jets can be placed in very small taper gages.

Sliced Bread—And The Limits Of Air Gaging

"Air gaging is the greatest thing since sliced bread," a friend once said. And he was right—air gaging is good.

Surface Texture From Ra to Rz

The irregularity of a machined surface is the result of the machining process, including the choice of tool; feed and speed of the tool; machine geometry; and environmental conditions. This irregularity consists of high and low spots machined into a surface by the tool bit or a grinding wheel.

DFGT - Double Flank Gear Testing

Functional gear testing, also known as total radial composite deviation, is a method of looking at the total effect of gear errors. This test method simulates the conditions under which a set of gears is likely to operate as a result of the gears meshing together.

Stacking Up For Big IDs

For those medium and large parts with inside diameters greater than 4 inches, an inside micrometer is often used as the inspection tool of choice. This is especially true if the volume of parts is low and there is a large range of diameters to account for.

The Dial Tells It All

Dial indicators—you've seen one, you've seen them all. They are all over the shop, and as you walk around, they all look the same to you.

Say Hello to Mr. Abbé, Mr. Hooke And Mr. Hertz

Whenever you use a handtool or precision gage, you should be aware of typical pitfalls that prevent good gage performance. These include measurement errors resulting from environmental conditions (dirt and temperature), loose and/or worn gage parts, and operator misuse.

Feels Like A Go To Me

Once a QC manager came to me, confused and dissatisfied. He was spending money to buy quality masters, but his inspection process was not improving.

The 'Issues' With Height Gages

Don't tell anyone, but there is something of a problem with height gages. The big issue that they have is what they measure: height.

The Real Dirt About Gaging

I'm not sure that any of us in the metrology business are very close to godliness, but I do know that cleanliness is the first step to approaching accuracy in gaging. Probably every machinist is at least nominally aware that dirt can interfere with the ability to take accurate measurements.

Fixtures Are A Common Source Of Gaging Error

As a gaging engineer, my concept of a gage includes both the measuring instrument and its fixture. Assuming you are dealing with a reputable supplier, and your instrument was engineered to do its job as intended, there is probably little you can do to improve its accuracy, aside from throwing it out and spending more money.

Choice Of Bore Gage Depends On The Application

Indicating bore gages come in two basic varieties: adjustable-capacity gages with interchangeable contacts or extensions and fixed-size gages with plug-type bodies. While indicating plug gages can measure closer tolerances with higher repeatability than adjustable ones, these are only two of several factors to consider when selecting a bore gage.

Coming To Terms With Accuracy

A question I am frequently asked is, "How accurate is that gage?" I am usually tempted to say something like, "Super accurate" or "So accurate you wouldn't believe it!" But I don't. Instead, I take a deep breath and give my questioner a couple paragraphs worth of information, then watch his jaw drop because he was only expecting a few words.

Do's And Don'ts For Keeping Dial Indicators In The Game

Just because dial indicators have been around since the early 1900s, don't expect them to fade away with the last century. This tool's long-term popularity is well earned.

Pump Maker Gains Production Efficiency With Smart Gaging Choices

The challenge facing this pump manufacturer was to make the high-tolerance inspection process so efficient that parts could be checked randomly by several machinists, without causing delays that would slow production.

Perfect Gaging In An Imperfect World

It is certainly not news that, more and more, gages are being forced out onto the shop floor. Tight-tolerance measurements that were once performed in a semi-clean room by a trained inspection technician are now being done right next to the machine, often by the machinist.

Gaging Countersunk And Chamfered Holes

While countersunk and chamfered holes are similar in appearance, functionally they are quite different. Consequently, different gages exist to serve these different functional requirements.

Never Forget The Basics

We spend a lot of time in this column discussing sophisticated gages and out-of-the-ordinary applications—so much so, that perhaps we've lately been neglecting the basics. After all, the fanciest electronics, computers and software won't deliver accurate results if good gaging practice is absent.

Electronic Height Gages

We've looked at "basic" comparative height gages, which are used for layout tasks and other surface plate measurements. Related to these are instruments known as electronic height gages.

Inspecting Tapers, Part 2: Toolholder Gaging

A few months ago, we discussed the calibration of conical taper masters, which are used to master taper gages. Now let's look at the parts those gages are used to inspect—toolholders.

Surface Finish: A Machinist's Tool. A Design Necessity.

Simple "roughness" measurements remain useful in the increasingly stringent world of surface finish specifications. Here's a look at why surface measurement is important and how to use sophisticated portable gages to perform inspections on the shop floor.

Assessing Gage Stability

Gage stability implies different things in different contexts. If taken literally, it may refer to whether there is something loose on the gage, or some other gage problem occurs randomly, to cause two identical trials to produce different results.

When Indicators Go Both Ways

Measuring and gaging are two fairly distinct forms of dimensional inspection. Measuring is a direct-reading process, in which the instrument incorporates a continuous scale of units, against which the part is compared directly.

Look Into My Stylii: Care Of Surface Finish Contacts

Proper care of contact points is one of the basic considerations in gaging. Whether you're using a simple indicator gage or a sophisticated surface finish instrument, much depends on the condition of the sensitive contact point, which is the interface between the gage and the workpiece.

Gaging Distance Between Hole Centers

Many of the gaging applications we've considered over the years involve size inspection of a single feature, that is, the diameter of a hole, depth of a groove, height of a gage block, and so on. Many parts, however, contain multiple features that establish dimensional relationships between two or more other parts.

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