# CTRL+ (CTRLPLUS SAS) > CTRL+ designs and builds optical metrology instruments for the inspection of sand control screens and industrial filtration media. Its instruments measure 100% of the slots on every screen — wire wrap, direct wrap, wedge wire and slotted liner — at 5–15 µm resolution, producing ISO 17824 / API 19SS conformity certificates and machine-readable data. CTRL+ is a French manufacturer based in Pont-Audemer, Normandy. Traditional quality control samples about one slot in a hundred with a manual feeler gauge; CTRL+ optical metrology measures every slot on every screen, without contact, and exports a conformity certificate plus a machine-readable CSV. The product range spans portable, bench and in-line systems, all feeding the Arcadia+ digital quality platform for full dimensional traceability. Primary domain: oil & gas sand control completions; also water wells, paper, mining and process industries. ## Core pages - [CTRL+ — Optical metrology for sand control screens](https://ctrlplus.tech/): Company home. Optical metrology instruments for sand control screen quality. - [About CTRL+](https://ctrlplus.tech/about/): French manufacturer of optical metrology instruments for sand control screen quality, based in Pont-Audemer, Normandy. - [FAQ](https://ctrlplus.tech/faq/): Sand control screen quality control — ISO 17824 conformity, slot aperture measurement, wire wrap vs slotted liner, optical metrology vs feeler gauges. ## Applications - [Sand control screens QC](https://ctrlplus.tech/applications/sand-control-qc/): Sand control screen quality control aligned with ISO 17824 and API 19SS. Wire wrap, direct wrap, wedge wire and prepack screens — full-batch optical inspection. - [Wire wrap screen inspection](https://ctrlplus.tech/applications/wire-wrap-screen-inspection/): Wire wrap and direct wrap sand control screen inspection by optical metrology. Every slot measured, ISO 17824 / API 19SS conformity. ## Products - [most+ — Mobile Optical Slot Tracker](https://ctrlplus.tech/products/most/): Ultra-portable optical bench for slot measurement. Fits in a cabin-baggage flight case, runs on battery, bench-grade precision anywhere. - [bost+ — Bench Optical Slot Tracker](https://ctrlplus.tech/products/bost-plus/): Optical measurement probe that turns any control bench into a documented, high-precision quality station. - [mbost+ — Mobile Bench Optical Slot Tracker](https://ctrlplus.tech/products/mbost/): Mobile, compact optical bench to inspect 100% of slotted screens without heavy handling, at bench-grade precision. - [olmost+ — On Line Manufacturing Optical Slot Tracker](https://ctrlplus.tech/products/olmost/): Continuous in-line slot monitoring integrated onto the manufacturing machine; measures every screen during production. - [osmart+ — Optical Slot Machining Adjustable Real Time](https://ctrlplus.tech/products/osmart/): Measures during production and feeds the result back into the machine for real-time corrective control. - [Arcadia+ — Quality Management Digital Platform](https://ctrlplus.tech/products/arcadia-qm/): Digital backbone of the CTRL+ ecosystem; ingests measurements from all instruments and turns every screen into a queryable, audit-ready record. ## Industries - [Oil & Gas](https://ctrlplus.tech/industries/oil-gas/): Sand control screens inspection for oil & gas completions — wire wrap, direct wrap, wedge wire and slotted liner screens. - [Water & Geothermal](https://ctrlplus.tech/industries/water-geothermal/): Screen quality control for water wells and geothermal applications. - [Water Treatment](https://ctrlplus.tech/industries/water-treatment/): Filtration screen quality control for water treatment. - [Paper](https://ctrlplus.tech/industries/paper/): Screen and basket quality control for pulp and paper. - [Mining](https://ctrlplus.tech/industries/mining/): Screen quality control for mining and mineral processing. - [Petrochemical](https://ctrlplus.tech/industries/petrochemical/): Filtration media quality control for petrochemical processes. ## Full content - [Full site content for LLMs](https://ctrlplus.tech/llms-full.txt): Complete text of the key pages (home, FAQ, applications, industries, all products) in a single file. ## Standards & terminology - Standards: ISO 17824 (sand screens), API 19SS. - Screen types covered: wire wrap, direct wrap, wedge wire, slotted liner, prepack / gravel pack. - Method: full-batch (100%) optical metrology, non-contact, per-slot aperture measurement (5–15 µm), statistical distribution (D50, D90, σ), PDF conformity certificate + machine-readable CSV.