# Metrology > Our thinking on the people, technologies and future of Metrology Public Ghost content for AI and LLM tooling. Use `/llms-full.txt` for consolidated page and post context. Append `.md` to any post or page URL to get the content in Markdown (for example, `/example-post.md`). ## Pages - [Contact us](https://www.metrology.com/contact-us.md) - Our Teams Technical Support Support@metrology.com Design Office Design@metrology.com Everything else Team@metrology.com Our Offices Europe Metrology Holdings Ltd, 128 City Road, London, EC2V 1NX Asia Pacific Metrology PTY LTD, 56 Campbell Street, Sydney, 2000 Americas Metrology LLC, 47 St Columbus… - [We design and build custom solutions for your specific problem](https://www.metrology.com/design.md) - Our Design office takes your drawing to design in 24 hours - [We're building the operating system for dimensional metrology](https://www.metrology.com/home.md) - From custom 3 point bore gauging to a global dimensional metrology operating system - [Metrology Deals](https://www.metrology.com/metrology-deals.md) - The global metrology industry is large, growing, but fragmented and consolidating fast - [Metrology Governance](https://www.metrology.com/metrology-governance.md) - Automated systems rely on a sensor estate and boards need to understand and mitigate this new and growing risk - [Metrology Operations](https://www.metrology.com/metrology-operations-2.md) - Management teams need to understand their measurement operations before auditors and customers understand the gaps - [Special Applications](https://www.metrology.com/specials.md) - When the catalogue isn't a solution we design from your drawing in 24 hours. Thousands of solutions delivered worldwide over 50 years. - [Standard Ranges](https://www.metrology.com/standards.md) - Standard 3 point bore gauges delivered worldwide 6mm - 200mm with 2 micron repeatability and certification - [Three Minute Metrology Guide](https://www.metrology.com/three-minute-metrology-guides.md) - News about metrology ## Posts - [The Metrology Calibrator - The Three Minute Metrology Guide](https://www.metrology.com/the-metrology-calibrator-the-three-minute-metrology-guide.md) - The issue A three-point bore gauge measures relative to zero, and that zero has to be set before every job against a known diameter. The standard method is a ring gauge machined to the exact nominal size being measured. The problems with the usual answers Buying a full set of rings scales badly. A… - [From demo to factory - scaling robot production and the actuator bore gauging gap](https://www.metrology.com/from-demo-to-factory-scaling-robot-production-and-the-actuator-bore-gauging-gap.md) - A practical guide for engineering leads and investor due diligence reviews - [The Metrology Governance gap cost Boeing $237.5 Million. A guide for directors and counsel.](https://www.metrology.com/metrology-governance-gap.md) - Metrology governance lets boards prove they know what their instruments show. Three forces driving this new category of risk. - [3 Point Bore Gauging Designed to Drawing](https://www.metrology.com/3-point-bore-gauging-designed-to-drawing.md) - 50 years of designing and building custom 3 point bore gauges for aerospace, defence, automotive, luxury and precision engineering - [Uber for Robots just raised $1.7bn. The Metrology gap just got bigger.](https://www.metrology.com/uber-for-robots-just-raised-1-7bn-the-metrology-gap-just-got-bigger.md) - Robots for food, mining and heavy transport. Andreessen Horowitz's bet on an 8 year stealth startup - [Elon needs half a billion calibration certificates. No one has them. Yet.](https://www.metrology.com/elons-in-the-market-for-half-a-billion-calibration-certificates.md) - Tesla starts Optimus production at Fremont this month, on a line designed for a million robots a year. - [Deep Bore Measurement - The Three Minute Metrology Guide](https://www.metrology.com/deep-bore-measurement-the-three-minute-metrology-guide.md) - The issue Depth is a key challenge for accurate bore gauging. Honed hydraulic cylinders, gun barrels, drive housings, heat-exchanger bores — the diameter that matters is metres from the operator's hand, and three separate problems compound on the way down: the gauge axis must stay aligned to the bo… - [Taper Measurement - The Three Minute Metrology Guide](https://www.metrology.com/taper-measurement-the-three-minute-metrology-guide.md) - The issue A taper has a different diameter at every depth — which means "measure the bore" is an incomplete instruction. Any reading is meaningless without an answer to where: at what axial position, referenced from which face. Spindle noses, valve seats, hydraulic cones and tooling bores live or d… - [Slot Measurement - The Three Minute Metrology Guide](https://www.metrology.com/slot-measurement-the-three-minute-metrology-guide.md) - The issue Internal slots break the founding assumption of bore gauging: that the feature is round. A circlip groove that isn't a full circle, a keyway broached inside a bore, a recess machined behind a smaller opening — these are width measurements hiding inside diameter-shaped access, and the geom… - [Ball Screws - The 3 Minute Metrology Guide](https://www.metrology.com/ball-screws-the-3-minute-metrology-guide.md) - The issue A ball screw doesn't run on its thread crests — it runs on the track, the semicircular or gothic-arch groove where the balls actually roll. The only diameter that predicts performance, preload and backlash is the running diameter measured exactly where a ball sits. Measure the crest and y… - [Spherical Bores - The Three Minute Metrology Guide](https://www.metrology.com/spherical-bores-the-three-minute-metrology-guide.md) - The issue A spherical bore is the geometry that defeats the standard drawer for one simple reason: the feature is larger than the hole that leads to it. Ball seats, hydraulic sockets, rod-end housings, valve interiors — the sphere's full diameter sits behind a smaller entry, at exactly the point no… - [Spline Measurement - The Three Minute Metrology Guide](https://www.metrology.com/metrology-guide-to-spline-measurement.md) - The issue Ask what diameter an internal spline is and you've asked three questions. Major, minor and pitch circle diameter each govern a different aspect of fit — and the PCD, the one that controls load sharing and backlash, is a geometric construction no surface of the part physically presents. Me… - [O Ring Measurement - The Three Minute Metrology Guide](https://www.metrology.com/metrology-guide-to-o-ring-measurement.md) - The issue An O-ring is only as good as the gland it sits in, and every sealing-failure investigation eventually arrives at the same unglamorous place: the groove. Its diameter — always larger than the bore that hides it — carries some of the tightest tolerances on the drawing, routinely ±0.05 mm (±… - [Thread Measurement - The Three Minute Metrology Guide](https://www.metrology.com/metrology-guide-to-thready-meaujdsjdnd.md) - The issue An internal thread has three diameters, and the one that governs fit — the pitch diameter — is the one no ordinary instrument touches. It lives between the crests, on the flanks that actually locate the mating part, routinely toleranced tighter than either diameter you can see. When a thr… - [80mm for pole. Give or take a hair.](https://www.metrology.com/coming-soon.md) - Formula 1 runs on a rulebook, and in 2026 that rulebook was rewritten more completely than at any point in the sport's history. Buried in the new power unit regulations are exactly two clauses held to a tolerance of ±0.1mm — about the width of a human hair, and the tightest lines in the document —… ## Optional - [RSS Feed](https://www.metrology.com/rss/) - [Sitemap](https://www.metrology.com/sitemap.xml) - [Full content of pages and posts](https://www.metrology.com/llms-full.txt)