Dimensionair replacement
Replace your Dimensionair dial. Keep your tooling.
The Air Gage Pro goes on the bench where your Dimensionair sat and connects to the air plugs, rings and setting masters you already own. Changeover takes under 2 minutes. No new tooling, no re-training.
Running Federal Dimensionair, Mahr Federal Dimensionair or Mahr Dimensionair dial air gages? Same gage, three names over the years, and one digital replacement: the Air Gage Pro. It plugs into the air tooling and masters you already own.
Air Gage Pro from $2,895, a complete digital station
Keeps your Dimensionair plugs, rings and masters · filter-regulator and pressure gauge built in · no software to install
Find your model and priceAsk a questionCall (815) 242-0027
Same bench, same air plug, same master. The Air Gage Pro takes the Dimensionair's place and reads in digital, color-coded against your tolerance. Watch the 2-minute changeover.
Replacing Mahr Federal air gages
Whether your gages say Federal, Mahr Federal or Mahr, the Air Gage Pro replaces them with the tooling you already own:
- Dimensionair dial gages: D-2500 to D-8000 → M5-L; D-10000 to D-32000 → M5-H
- 832 digital Dimensionair: M5-L or M5-H, matched by tool code
- Universal Dimensionair: M5 Dual when run on two masters, or M5-L / M5-H on one master
- Federal EAG air gage columns: M5-L for EAG-31xxx and EAG-32xxx, M5-H for EAG-33xxx and EAG-34xxx
Which Air Gage Pro replaces your readout?
Match by the model on your readout or the tool code on your plugs and rings. Low- and high-amplification tooling don't interchange, so each group has its own model.
| Your readout | Amplification | Tooling | Replace with |
|---|---|---|---|
| Dimensionair D-2500, D-4000, D-5000, D-8000 | 2,500:1 to 8,000:1 (low) | Tool Code 20 or 50 |
Air Gage Pro M5-L 1 input $2,895 · 2 inputs $3,595 |
| Federal EAG-31xxx and EAG-32xxx columns | Low | Low-amp single master tooling | |
| Western Gage Series 60 readouts (63, 64) | Low | Series 60 tooling | |
| Dimensionair D-10000, D-16000, D-20000, D-32000 | 10,000:1 to 32,000:1 (high) | Tool Code 5 or 10 |
Air Gage Pro M5-H 1 input $2,895 · 2 inputs $3,595 |
| Federal EAG-33xxx and EAG-34xxx columns | High | High-amp single master tooling | |
| Western Gage Series 70 readouts | High | Series 70 tooling | |
| Two-master readouts, any brand, including Western Gage Series 10, Edmunds and Marposs | Set by min/max masters | Two-master tooling | Air Gage Pro M5 Dual |
Have only the order number off the label, like 2095184 or 2098125? Look it up in the Dimensionair model and order-number guide. Not sure which you have? See how to identify your model, amplification and tool code, or call (815) 242-0027 with the model number from the dial. Need new plugs or rings? See Dimensionair-compatible air plugs and rings.
Know your model? Order online or add it to a quote:
M5-L for D-2500 to D-8000M5-H for D-10000 to D-32000M5 Dual for two-master tooling
One unit replaces several dial models
A dial readout is built for one amplification, so a plant often runs D-2500s, D-5000s and D-8000s side by side. The Air Gage Pro M5-L covers all four low-amp models with one part number, and the M5-H covers all four high-amp models. The digital display shows the reading at the resolution you need, up to 6 decimal places in inch or 4 in metric. Fewer models means fewer spares and one set of operator instructions. More in air gage amplification explained.
Changeover in under 2 minutes
Watch it in real time. This video runs 1:58 from a Dimensionair on the bench to an Air Gage Pro measuring parts with the same air plug.
- Remove the old readout from the bench.
- Connect your existing plugs and rings to the front quick-connects, then shop air and power.
- Master and measure on one master at nominal, same as always, on a dial view your operators already read. Now it's digital and color-coded.
Dial vs. digital
Mahr has discontinued the Dimensionair dial gages, so replacement dials will only get harder to find. Here's what changes when you go digital. Comparing Mahr's Millimar C1202? See Air Gage Pro vs. Millimar C1202, or read your options now that the Dimensionair is discontinued.
| Analog dial readout | Air Gage Pro | |
|---|---|---|
| Reading | Pointer on a graduated dial, read by eye | Digital value, color bar graph or dial view, green/yellow/red against tolerance |
| Inputs | 1 per readout | 1 or 2 per unit, up to 3 characteristics on screen |
| Setups | Tolerance marks set by hand | 10 stored programs, loaded by touch or QR code |
| Data | Written down by the operator | USB export to Excel/CSV, RS232 to SPC, Modbus RTU |
| Your tooling and masters | Stay the same | |
What you gain
Faster changeover
Scan a QR code and the whole setup loads: tolerances, masters and screen.
Data out
USB export to Excel/CSV and RS232 for SPC. No more writing readings down.
Locked-down programs
Password protection keeps tolerances where engineering set them.
Built for the bench
Sloped housing guaranteed for life against breakage, with filter-regulator and pressure gauge built in.
Replacing more than a few?
Ready to replace yours?
Start with one gage. Keep every plug, ring and master you own.
Order a single Air Gage Pro online, or tell us what's on your bench and we'll match every station.
Find your model and orderAsk a questionCall (815) 242-0027FAQ
Is a Federal Dimensionair the same as a Mahr Federal or Mahr Dimensionair?
Yes. Federal Products built the Dimensionair; the company later became Mahr Federal and is now part of Mahr. Gages labeled Federal, Mahr Federal or Mahr Dimensionair use the same tool codes and tooling, and the same Air Gage Pro models replace them.
Is a "dimensional air gage" the same as a Dimensionair?
Usually, yes. "Dimensional air gage" is a common way of searching for the Federal / Mahr Federal Dimensionair dial air gage. Any dimensional air gage that uses single-master Dimensionair tooling can be replaced by an Air Gage Pro M5-L or M5-H, and two-master air gages of any brand by the M5 Dual, with the tooling you already own.
Can I keep my Dimensionair air plugs, rings and masters?
Yes. The Air Gage Pro connects to your existing tooling and masters. Match the M5-L to low-amp tooling (Tool Code 20 or 50) and the M5-H to high-amp tooling (Tool Code 5 or 10).
How much does a Dimensionair replacement cost?
An Air Gage Pro station is $2,895 for 1 input or $3,595 for 2 inputs, with the filter-regulator and pressure gauge built in.
Is the Dimensionair discontinued?
Mahr has discontinued the Dimensionair dial gages. See your options now that the Dimensionair is discontinued.
Downloads
Dimensionair replacement flyer (PDF) · Air Gage Pro brochure (PDF) · M5-L / M5-H single-master user manual (PDF)
Dimensionair, Mahr, MahrFederal, Federal, Millimar, Western Gage, Edmunds and Marposs are trademarks of their respective owners, used only to identify compatible equipment. Air Gaging LLC is not affiliated with or endorsed by them.
Questions
Will my existing air plugs and rings work?
Yes, if they are single-master tooling for your current readout. Choose the M5-L for Tool Code 20/50 (low-amp) tooling and the M5-H for Tool Code 5/10 (high-amp) tooling.
Do I need new setting masters?
No. Single-master tooling uses one master at nominal size, and you keep using the masters you have.
Is the Dimensionair discontinued?
Yes. Mahr has discontinued the Dimensionair dial gages and points buyers to its Millimar C1202 electronic amplifier. The Air Gage Pro connects to the same tooling and masters you already own, and adds stored programs, color tolerance zones and data output.
Does it replace Federal EAG columns?
Yes. The M5-L replaces EAG-31xxx and EAG-32xxx columns, and the M5-H replaces EAG-33xxx and EAG-34xxx columns, using your existing single-master tooling.
How long does the changeover take?
Typically under 2 minutes per station: remove the old readout, connect the tooling, air and power, and master.
I'm not sure which amplification I have.
Check the model number on the readout (D-2500, D-10000 and so on) or the tool code on the plug or ring. Or call (815) 242-0027 and we'll match it.
Can one unit run two stations?
Yes. The 2-input models run two gages, A and B, on one screen.
What about two-master (min/max) air gaging?
Use the Air Gage Pro M5 Dual. It works with two-master plugs and rings of any brand.
Do you offer volume pricing?
Yes, for multiple units. Use the request form on the fleet upgrade page or call (815) 242-0027.