Laser sensor, optical micrometer or encoder: choose the measurement method first
https://fly-supply.net/en/guides/industrial-measurement-method-selection

Your enquiry checklist
[ ] Dimension/feature, nominal range and required acceptance criterion
[ ] Part drawing and material/surface description
[ ] Accessible sides, stand-off and installation-space limits
[ ] Motion, production speed and environmental conditions
[ ] Controller, signal/interface and power requirements
[ ] Representative sample/evaluation needs, quantity and required date

Use this guide to prepare a request. Exact suitability, installation eligibility, applicable documentation and service scope are confirmed for the specific equipment and application.