Category: Air Gauging, Metro Products

Metro M1 air gauging system | Precision Single-Channel Air Gauge Unit

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Prices starting from: £2,695.00

Typical pricing varies by model, please contact us for a quote.

The Metro M1 air gauging system is a compact, high precision solution for single channel dimensional measurement. Designed for use with industry standard air gauges, it delivers fast, repeatable results for bore, taper and critical feature inspection – making it ideal for both shop-floor and laboratory applications.

Key features

  • High accuracy and repeatability for tight tolerances 
  • Compatible with existing air gauges (Mahr, Federal & more) 
  • Compact, space-saving design for benches or integration 
  • Easy-to-use interface for quick setup and operation 
  • Ideal for shop-floor and laboratory environments
Metro Air Gauge 4
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M3 configuration window
M3 configuration window
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Metro Air Gauge 2

Metro M1 Complete System (Single-Channel)

Part No: 11040/System (Mercer)
A complete, ready-to-use air gauging system for single-channel measurement.
Includes:

  • M1 display unit (11040)
  • UK mains cable (CBL-SEC-002)
  • Stand (ACS-PNE-024)
  • Air preparation unit (ACS-PNE-039)
  • Bayonet adaptor for Mercer air gauges (ACS-PNE-011)
  • Set of restrictors (ACS-PNE-037)

Optional Stand Benefits (ACS-PNE-024):

  • Stable Measurement Platform: Ensures consistent readings by minimising vibration and movement.
  • Integrated Air Supply Management: Keeps tubing organised and reduces setup time.
  • Ergonomic Layout: Designed for operator comfort and efficient workflow.

Compatibility:

The Metro M1 & M3 is available in models compatible with Mahr /  Federal air gauging tooling, making it easy to upgrade or replace existing systems without changing your current air plugs or rings. This ensures seamless integration into legacy setups while benefiting from modern electronics and improved usability. Replacement for the BOWERS AIR1 & AIR2.

Applications:

  • Bore diameter measurement
  • Taper inspection
  • Precision component quality control
  • Inline or offline inspection
  • Production batch sorting

Whether you’re upgrading an existing air gauging setup or starting fresh, the Metro M1 + stand offers a reliable, scalable solution for precision measurement.

Part NumberProduct
11040M1 for 1 Air Gage (requires ACS-PNE-037 or -038) 
11040-MF-H** M1 for 1 Air Gage Mahr/Federal compatible (1-master) High Amplifier
11040-MF-L*** M1 for 1 Air Gage Mahr/Federal compatible (1-master) Low Amplifier
ACS-PNE-003 Air preparation for air gage (including filter and 2 regulators)
ACS-PNE-004* Precision air preparation set for air gage with air saving function

* requires a MB-RO module + cable 45186-1,5
ACS-PNE-005 T pneumatic fitting 8-8-6mm (push in type)
ACS-PNE-006 Soft PU tube dia 6mm ext, the meter
ACS-PNE-007 Soft PU tube dia 8mm ext, the meter
ACS-PNE-008 Y pneumatic fitting 8-8-6mm (push in type)
ACS-PNE-009Stopper diam 8mm
ACS-PNE-010 Soft PU tube dia 3mm ext, the meter
ACS-PNE-011 Baionet adapter for Mercer air gages
ACS-PNE-015 Straight pneumatic reduction 8 to 6mm (push in type)
ACS-PNE-025 Restrictor with stansard size beetween 0,3 and 0,9mm (each 0,1mm)
ACS-PNE-026Restrictor with special size >0,9mm
45186-1,5 Connecting cable from MB-RO to air saving unit or regulator for probes
ACS-PNE-024 Stand for 1 or 2 air gauges, fixation for display, modules and regulator.
ACS-PNE-027Stand for max 3 air gages, fixation for display, modules and regulator 
ACS-PNE-030 Stand for max 4 air gages, fixation for display, modules and regulator 
ACS-PNE-032 Stand for max 5 air gages, fixation for display, modules and regulator 
ACS-PNE-037 Set of brass restrictors diam. 0.3 to 0.9mm every 0.1mm + O’ring 
ACS-PNE-038 fitting set for integrated restrictor air gage 
ACS-PNE-026 Non-standard restrictor (diameter over 0.9mm) 

** The H(High) versions are a replacement solution for Mahr/Federal amplifiers type D-10000, D-16000, D-20000, D-32000, EAG-33XXX, EAG-34XXX .

***The L(Low) versions are a replacement solution for Mahr/Federal amplifiers type D-2500, D-4000, D-5000, D-8000, EAG-31XXX , EAG-32XXX

Metro-M3-display-for-air-gauging

User friendly interface

Compatible with all air gauge brands

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M3 2 characteristic display

Multiple measurement display modes

Graphical interface

Measurements can be displayed with different types of barographs and needle indicators for ease of use.

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Metro-m3-display-usb-connection

USB connection

The mini-USB provides power to the M3 and allows for measurement transmission

Many functions and measurement mode can be selected through the keyboard:

  • 1 or 2 measurement configuration (2 characteristic only on M3) 
  • Calibration in 2 or 3 points
  • Resolution up to 0.01µm
  • Filtering function for a very high measurement stability not depending on the air gage.
  • Different display modes with or without tolerances: analogue (needle indicator), digital
  • Tolerance limits and control limits (Warnings).
  • Absolute or relative measurement
  • Direct or dynamic measurement (Min, Max, Max-Min , Average, Median)
  • USB communication “virtual keyboard”
  • USB Stick connection for data export (CSV file)
  • Modbus-RTU or ASCII Communication on RS232
  • Sorting by classes of size, up to 16 classes by characteristic, with useful coloured indicator.
  • Possibility to connect up to 4 optionnal I/O module with 8 optocoupled I/O (= max 32 I/O)
  • Possibility to connect a multi-function footswitch (measurement transfert, calibration etc…)
  • Alarm with temperature variation (option)
  • Temperature compensation (option)
  • Configuration possible by a QR code
  • Easy to use and reliable

The M3 is equipped with a mini-USB connector with 2 functions
1. Power supply via a supplied wall transformer.
2. Measurement transmission: When the M3 is connected in USB to a PC, it is detected as a keyboard with the standard drivers of your operating system (Windows, MacOS, Linux…). When you transfer measurements from the M3, they appear on your computer screen as if they had been entered on the keyboard. No need to install any specific driver or software.

Advantages of this feature:

  • No risk of error when entering values
  • Saves time
  • Works everywhere on all software: Excel, SAP, Word….
  • No need for a driver, interface software or computer knowledge: you just plug in the display and you can work

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