Understanding Accuracy Across the Work Envelope Machine tool performance is not always uniform across the entire work envelope. Small positioning and geometric errors can compound as the tool moves through different locations, affecting finished-part accuracy in ways...
Laser Tracker
How Horizon Surgical Systems Improved Robot Accuracy 5–10× With an API Laser Tracker
When you're operating inside the human eye, a millimeter isn't a rounding error — it's the whole game. That's the challenge Horizon Surgical Systems set out to solve, and by using an API laser tracker for robot calibration, the team improved the accuracy of its...
How API’s XD Laser Helps Calibrate Small FDM 3D Printers
Small FDM 3D printers do not leave much room for measurement hardware, but they still need accurate checks for positioning, straightness, perpendicularity, and repeatability. This case study shows how API’s XD Laser made that job practical on a compact machine where conventional interferometers fell short.
Smarter Steam Turbine Maintenance Measurement with the API Radian Laser Tracker
Steam turbine overhauls leave very little room for measurement error. This case study shows how API’s Radian laser tracker and vProbe help maintenance teams measure rotor, casing, and seal geometry accurately enough to guide alignment and rework.
Large Motor Housing Coaxiality Inspection with the Radian Pro Laser Tracker
See how API used a Radian Pro laser tracker to inspect large motor housing coaxiality to a 0.18 mm tolerance in a 30-minute measurement workflow.
Laser Tracker Inspection for Lithography Machine Base Installation
Lithography machine bases demand micron-level alignment and stable reference geometry. This case study shows how API’s Radian laser tracker helps semiconductor teams inspect, adjust, and document base installation with one unified 3D coordinate system.
Portable Automated Model Milling for Sculpture and Clay Models
Physical models still matter when teams need fast feedback on form, scale, and finish. This case study shows how API positions its Galaxy platform and portable robotic milling system to machine clay, foam, plaster, resin, and tooling board for design and sculpture work.
Automotive Tooling Inspection and Adjustment with the Radian Laser Tracker
Automotive fixtures drive fit and finish, but inspecting them with a traditional CMM workflow is slow and disruptive. This case study shows how API’s Radian laser tracker was used to verify locating-pin positions, compare to CAD, and guide real-time adjustment on the line.
A Smarter Way to Inspect a Massive Rotary Reaction Furnace
A 10,000-ton rotary reaction furnace leaves very little room for alignment error, especially when the body is built in sections and joined on site. This case study shows how API’s Radian laser tracker helped the team measure, align, and install the furnace with tighter control and less guesswork.
Industrial Robot Calibration Services | API Metrology
Industrial robot calibration restores positioning accuracy lost to drift, thermal error, and wrist wear. On-site ISO 9283 testing by Real Metrologists.

















