Modern industrial lab with coordinate measuring machine and workstations inside a clean manufacturing facility.

CMM Rooms and Metrology Enclosures in Atlanta, GA

Stable Temperature, Repeatable Measurements.

Metrology enclosures with HVAC sized to your real heat load, so measurements repeat, built on your slab anywhere in the Southeast.
Call: 770-529-0418

Plan Your CMM Room

Spacious industrial lab with coordinate measuring machine and workbenches in a clean factory environment

What a CMM Room Is

Metrology Environments

A CMM room is a prefabricated enclosure built around a coordinate measuring machine, specified to a thermal requirement rather than a comfort one. Steel changes dimension with temperature, so a precision part measured on an open plant floor in the morning and afternoon can produce two different readings, both accurate to the part's actual size at that temperature. Metrology standards are written around a reference temperature for this reason. Holding that temperature stable removes the variable, and panel selection, door type, lighting, and entry sequence all follow from the HVAC requirement.

  • What it is. A prefabricated enclosure built around a coordinate measuring machine, holding temperature stable enough that the measurement is repeatable.
  • Why it exists. Steel moves with temperature. A part measured at 68°F and again at 78°F is not the same part dimensionally, and neither reading is wrong.
  • What drives the design. HVAC. Everything else follows from the thermal requirement.
  • Where it goes. On your existing slab, inside the plant, near the process it inspects.

What Drives the Design

Design Factors

  1. The thermal target

    Not just a setpoint but a tolerance band and a rate of change. Holding ±2°F differs from holding ±1°F, and holding either through a 24-hour cycle with shift changes is a harder target than during first shift alone.

  2. Heat load inside the room

    The CMM itself, its controller, lighting, and the operator all add heat to the enclosure. Sizing HVAC to floor area rather than to actual heat load is the most common mistake made in this category.

  3. Heat load from outside

    What sits on the other side of each wall matters as much as what is inside it. A CMM room against a heat-treat line carries a different envelope requirement than one placed in a conditioned warehouse.

  4. Door traffic

    Every door opening is a thermal event that lets conditioned air escape. High-traffic rooms benefit from a vestibule or an air curtain to limit exchange; low-traffic rooms usually do not need either feature added.

  5. Vibration

    Enclosures do not isolate vibration on their own; the slab underneath does that work. If a CMM sits near a press, a forklift aisle, or a compressor, the foundation needs addressing separately from the room design.

  6. Humidity

    Less critical than temperature for dimensional accuracy, but still relevant to equipment life and to condensation control in rooms where the indoor-outdoor humidity differential runs large, particularly near loading doors or exterior walls.

Where CMM Rooms Are Used

And Construction

The room is built on the same panel system as a modular office, specified for thermal performance rather than comfort. Wall panels use an insulated core, with thermal panels added where the differential requires it. The roof deck is 22 ga corrugated B deck with a lay-in ceiling, or engineered for load where needed. Doors are prehung steel and gasketed, with a vestibule added where traffic warrants one. HVAC is a dedicated unit sized to actual heat load rather than floor area. Lighting is specified for the inspection task and counted as part of that heat load. Electrical is routed through stud raceways, kept accessible without opening walls.

Diagram of a console and CMM enclosure with a person beside a control console and measurement machine

Automotive and Aerospace

The largest users. Dimensional inspection of machined parts, fixtures, and assemblies where tolerance is the product.

Layout diagram showing a shop floor with workstations and an inspection room separated by green lines and two stick figures.

Precision Machining and Job Shops

First-article inspection and in-process checks where the shop floor will not hold a stable reading.

Warehouse section with controlled stock shelves and documented inspection area with workers and equipment.

Medical Device

Dimensional inspection under a quality system that requires documented, repeatable measurement.

Illustration of an injection press machine inside a building with a person and a stable temperature chamber.

Plastics and Molding

Tool and part inspection where thermal expansion is a live variable in the process itself.

Floor plan showing plant area and inspection room with CMM, optical comparator, and gauge bench equipment.

Metrology Labs Generally

Any enclosure built around gauges, comparators, or optical measurement, not just a CMM.

Built and Installed by Our Own Crews

Why Power and Motion

Power and Motion designs, supplies, and installs CMM rooms and metrology enclosures across Georgia and the Southeast from a shop in Acworth. HVAC is sized to actual heat load, including machine, controller, lighting, occupancy, and adjacent processes, before a panel system is selected; rooms designed the other way around do not hold their spec. The same shop builds modular offices, clean rooms, partition walls, and mezzanines, so a CMM room next to a new inspection mezzanine is one project rather than two vendors.

See a QC lab and an inspection room we built.

Call 770-529-0418

Frequently Asked Questions

FAQs

How much does a CMM room cost?

The mechanical package usually costs more than the enclosure. Cost is driven by the temperature tolerance you need to hold, the heat load inside the room, and what is on the other side of the walls. A room holding ±2°F in a conditioned building is a fraction of one holding ±1°F next to a heat-treat line.

What temperature does a CMM room need to hold?

That comes from your metrology requirement and your customers' quality expectations rather than from the enclosure. Tell us the target and the tolerance band, and we design the mechanical to hold it. If you do not have one written down, we will help you establish what your process actually needs.

Can a CMM room be added to an existing plant?

Yes, that is the normal case. It is built on your existing slab inside the building. The main constraints are clear height for the roof deck and HVAC, and available power at the location.

Does a CMM room control vibration?

Not by itself. Vibration travels through the slab, so isolation is a foundation question rather than an enclosure question. If the CMM sits near a press or a forklift aisle, we will flag it during design - but the fix is under the floor, not in the walls.

Can it be moved or expanded later?

Yes. The panel system is demountable, so the room can be expanded, reconfigured, or relocated. The HVAC has to be re-evaluated for the new location, since the heat load usually changes with it.

Keep looking

Related Structures

01Modular clean rooms→classified environments to ISO 14644-1 02In-plant modular offices→the same panel technology for support space 03Industrial partition walls→panel systems that divide open plant floor into separate work areas 04Guard shacks and booths→prefabricated booths for gate, dock, and yard security stations

Tell Us the Machine and the Tolerance

Start a project

The CMM model, the temperature you need to hold, and what is around the proposed location.

Call 770-529-0418