Bridge-type CNC coordinate measuring machines are the workhorse of the 2026 market, with 3-axis bridge units listing from roughly US$3,000 to US$50,000 per piece across Chinese OEM catalogues [S2][S5][S6].
Used inventory on Machinio exceeded 1,371 active listings as of 2026-07-20, with USA at 404 units, Germany at 248, Vietnam at 188, and Italy at 161 leading the country mix [S1]. Top manufacturer counts on the same index: Zeiss 127, Mitutoyo 117, Wenzel 81, Hexagon 73, and Brown & Sharpe 63 [S1].
Four structural variants and what each actually does
A bridge CMM carries the X-axis beam on a moving bridge, giving it the dominant share of general-purpose three-axis inspection; manual and CNC formats are both still listed, and Mitutoyo's B120 manual bridge at 24" x 12" x 18" travel illustrates the small-footprint manual class [S1]. Fixed-bridge and moving-bridge designs trade floor space against dynamic mass: a moving bridge accelerates faster, a fixed bridge carries higher payloads. For parts exceeding roughly 2 m in any axis, a gantry CMM becomes the practical option, since moving-bridge stiffness drops sharply as the bridge grows [S9].
Handheld CMMs, typified by the Keyence XM-1200 with camera, probe, and stage marker configuration, target 3D GD&T features on the shop floor rather than in a climate-controlled room [S4][S7]. A vision measuring machine (also called a vision measuring machine) is the right pick for small 2D features where a non-contact camera replaces a tactile probe, and Chinese OEM price points sit around US$13,000–15,000 for a 2D JVB250-class system [S8].
Accuracy, probe, and the ISO 10360 reference test
CMM accuracy is quoted against ISO 10360, which defines permissible MPE (maximum permissible error) for length-measurement and probing error using a standardised artefact set; anything else (vendor "accuracy ±X µm") is a marketing line, not a spec [S1][S9]. For a tactile probe, expect a probing form error MPE in the 1.5–4 µm range on a mid-size bridge, and length error MPE near (3 + L/333) µm in the same tier. The CMM's machine linear guide sets the floor on positioning repeatability, so check that the axis drives use preloaded recirculating bearings, not plain slides, on any unit below the 1 µm MPE line.
Touch-trigger probes remain the default for prismatic parts, while scanning probes pick up free-form surfaces; multi-sensor heads add a laser or camera to one head so a single setup covers edges, slots, and soft surfaces. The coding machine behind a scanning probe must read 1D/2D bar-coded styli to support automatic tip calibration across the probe changer.
Price tiers, lead time, and sourcing geography
New-unit CMM price on Made-in-China spans roughly US$3,000 for an entry bridge to US$50,000 for a fully automatic 3D unit, with most export-grade CNC bridges clustering in the US$15,000–50,000 band [S2][S5][S6]. Manual CMMs from suppliers such as NANO Metrology sit at US$15,000–25,000 per piece, with a stated supply ability of 200 pieces per year and 1-piece MOQ [S3]. Vision systems start near US$13,000 for 2D and scale upward into the US$28,000+ range for 3D coordinate measuring systems [S8].
Used pricing is opaque: Machinio listings of a Carl Zeiss MMZ B 20 30 20, a Mitutoyo B120, and a DEA IOTA 2203 (40" x 54" x 40", PC-DMIS 2015) all show "Contact Seller for Price" rather than published numbers, which is standard for the secondary market [S1]. Chinese OEM lead times run 4–8 weeks for bridge CMMs once deposit clears, and the same suppliers typically offer 1-year warranty with 3R-style "return, replace, refund" clauses [S2].
When a CMM is the wrong tool
Handheld CMMs (Keyence XM-1200 class) are the right pick for sheet-metal, weld-fixture, and large-bodywork inspection where moving the part is impractical [S4][S7].
Skip a CMM entirely if tolerance is above 0.05 mm, batch size is single-digit, or the part is larger than the available bridge envelope: a vision measuring machine covers 2D features, and a crossed-roller guide stage with a manual probe is cheaper for low-volume lab work. Also avoid fixed-bridge machines if the workload includes parts over roughly 2 tonnes; the moving gantry can be sized for tonnage, the fixed bridge cannot.
Decision criteria: side-by-side comparison
Four realistic options lined up against selection criteria a 2026 buyer actually scores on:
<strong>Bridge CMM (mid-size, CNC)</strong>, envelope 500–1000 mm XYZ, MPE roughly 2–4 µm, used price band US$15,000–50,000 new, climate-controlled room required, fits general prismatic and small free-form work. <strong>Vision measuring machine</strong>, 2D camera, accuracy 3–5 µm typical, US$13,000–15,000 for 2D units [S8], no climate room needed, fits flat parts, gaskets, sheet metal. <strong>Handheld CMM (XM-1200 class)</strong>, probe + camera, accuracy 0.05–0.1 mm typical, US$30,000+ new, shop-floor usable, fits large parts and fixtures [S4][S7]. <strong>Gantry CMM</strong>, envelope 2 m+ XYZ, MPE 5–10 µm, US$50,000+ new, requires reinforced floor, fits aerospace, wind, and large castings [S9].
Procurement, install, and lifecycle traps
Three traps catch first-time CMM buyers in 2026. First, the core machine of a CNC bridge (granite table, X/Y/Z drives, controller) is roughly 60% of list price; software, probes, and fixturing add another 30–40%, so a "US$30,000 bridge" lands closer to US$50,000 installed [S2][S5]. Second, machine accuracy depends on the environment: 20 ± 1 °C room, vibration isolation, and a granite foundation are not optional for sub-5 µm work. Third, used CMMs from Western OEMs (Zeiss, Hexagon, Mitutoyo, DEA) carry proprietary controllers and probe systems; spares and software licences can cost more than the machine itself over a 10-year horizon, so a pre-purchase probe-system audit is mandatory [S1].
For cross-industry context on how spec-first selection logic applies to other instrument categories, the Electromagnetic Flowmeter Buying Guide 2026: Spec-First Selection applies the same envelope-versus-accuracy reasoning to flow measurement. The Thermal Imaging Camera Buyer's Guide 2026 covers a similar non-contact-versus-contact trade-off that a vision-versus-tactile CMM buyer also faces.