Translating a technical manual is a process that requires precision, because the resulting document must be accurate and reliable. A technical manual must guide operators, ensure safety, pass certifications, and comply with country-specific regulations. When technical documentation is poorly translated, the consequences are measurable: rejected certifications, delivery delays, machines held at customs due to non-compliance, operators unable to understand emergency procedures.
Choosing a technical translation agency requires the same level of attention you give to selecting any critical supplier for your production. Here are ten concrete criteria to evaluate expertise, reliability, and the ability to manage the complexity of the industrial sector.
1. Verifiable ISO Certifications
Certifications are one of the first indicators of reliability.
- ISO 17100:2015: defines requirements for translator selection, revision, and project management.
- ISO 18587:2017: concerns post-editing of machine translation, ensuring these workflows also meet high-quality standards.
Why it matters: Certifications ensure structured processes, mandatory revision, and documented linguistic competencies. In the case of post-editing, they guarantee that human intervention makes the text suitable for professional use by correcting typical machine translation errors.
Questions to ask:
- Are you certified under ISO 17100 and ISO 18587:2017? Can you send me the certificate?
Warning: Claiming to work according to ISO standards without verifiable certification has little value. Certification is issued by accredited third-party bodies after rigorous audits.
2. Documented Industry Specialization
In technical fields, generalization is a limitation. The difference between a generalist translator and a specialist becomes clear at the first proportional valve, extrusion cycle, or sensor calibration procedure.
Why it matters: An industrial machinery manual contains terminology not found in standard dictionaries. Translating “giunto” as “joint” may be theoretically correct, but you need someone who can distinguish between universal joint, constant velocity joint, spherical joint, or elastic coupling depending on the mechanical context. You need someone who understands what the machine does, not just what the words say.
Questions to ask:
- Which industrial sectors do you specialize in?
- Can you show examples of projects similar to mine (machinery, automotive, automation)?
- Do your translators have technical expertise in addition to language skills?
Practical example: For a project involving the translation of 15 technical manuals on plastic recycling machinery using extrusion, Aglatech14 selected translators with documented expertise in industrial mechanics and polymer processing.
3. Verifiable Technical Skills of Translators
Knowing languages is not enough: you need professionals who can read electrical diagrams, interpret flowcharts, and understand mechanical specifications.
Why it matters: When translating a CNC lathe or industrial extruder manual, you must understand how the machine works to make instructions clear. An error in translating an emergency procedure or safety parameter can have serious consequences.
Questions to ask:
- What technical background do your translators have?
- How do you select linguists for projects in my specific sector?
Warning: Saying that translators are native speakers with a degree in languages is not enough. Technical translation requires skills beyond linguistic proficiency.
4. Structured Quality Assurance System
A competent agency must have a multi-level quality control system: translation, specialist revision by a second translator, final quality assessment, and evaluation scorecards.
Why it matters: Even a highly skilled translator may overlook details. Cross-checking is the only guarantee of accuracy, especially for safety-critical documentation.
Questions to ask:
- How many levels of revision are included in your process?
- Who reviews technical translations?
- Do you use quality evaluation systems (TQA – Translation Quality Assessment)?
Practical example: Aglatech14 developed a quality control system where an internal team of specialized reviewers checks all translations before delivery and compiles evaluation scorecards. Translators are categorized based on quality, punctuality, client feedback, and reliability.
5. Professional Terminology Management
Glossaries, translation memories, and terminology databases are not optional in technical translation. They ensure consistency across multiple manuals, updates, and multilingual projects.
Why it matters: If “vent valve” becomes “discharge valve” on page 50 and then “release valve” on page 100, the manual loses credibility. The operator also wastes time searching for components with three different names.
Questions to ask:
- Do you create dedicated glossaries for each client?
- How do you ensure terminology consistency across projects and updates?
- Do you use CAT tools and terminology QA software?
Warning: Terminology consistency must be monitored over time. Even small variations, repeated across documents and languages, can create ambiguity and slow down usability.
6. Professional Multilingual Project Management
Translating a manual into one language is complex. Translating it simultaneously into 5, 10, or 15 languages while maintaining absolute consistency is another challenge. When a company operates across multiple markets, it needs a partner who can coordinate multilingual projects and ensure consistency across all language versions.
Why it matters: Terminology inconsistencies across languages create confusion for operators, slow down technical support, and damage brand perception. Multilingual management is not the sum of separate translations, but a coordinated process.
Questions to ask:
- How do you manage projects involving multiple languages simultaneously?
- Do you use shared translation memories across all languages?
- Do you have a single project manager coordinating all languages, or is each language handled by a different contact?
Practical example: For an international design group, Aglatech14 developed translation memories to ensure terminology consistency when translating codes of conduct and company policies into 10 languages. This made it possible to update content while maintaining consistency across all versions.
7. Ability to Handle Complex Technical Formats and DTP
Industrial manuals are not simple Word files. They are often documents with complex layouts, integrated technical images, tables, diagrams, and exploded views. An agency must be able to handle DTP (Desktop Publishing) both before and after translation, including extracting and reinserting text from non-editable images.
Why it matters: Translating text is not enough if it cannot be reintegrated into the original layout while preserving formatting and readability. Many manuals include text embedded in images, which requires specific expertise to extract, translate, and recreate.
Questions to ask:
- Do you handle DTP in-house or outsource it?
- Which file formats can you process (InDesign, FrameMaker, structured XML)?
- How do you manage images with non-editable embedded text?
Practical example: For technical manuals with non-editable illustrations and text, Aglatech14 has an in-house graphics team specialized in layout and DTP. This allows them to extract text from images, translate it, and recreate the images with the translated text, avoiding external handoffs and reducing both turnaround times and the risk of errors
8. Realistic Delivery Times and Project Management Process
Unrealistic promises result in delays or poor quality. A professional agency calculates timelines based on volume, technical complexity, and available resources. It should also assign a dedicated project manager to coordinate the work.
Why it matters: Translating and revising 10,000 technical words within 48 hours by a single translator is simply not realistic without compromising quality. A dedicated project manager ensures smooth coordination and quick resolution of any technical or terminology-related queries.
Questions to ask:
- How do you calculate delivery timelines for technical projects?
- Will I have a dedicated project manager?
- How do you handle queries and technical issues during the translation process?
Practical example: Aglatech14 managed 121,000 words of technical manuals from Italian into French and Polish in two 15-day phases, coordinating specialized translators with continuous oversight by dedicated project managers.
9. In-House Team vs. External Coordination Only
There is a significant difference between an agency with an in-house team (project managers, quality specialists, linguists, designers, and technology specialists) and one that simply acts as an intermediary for external freelancers. An in-house team ensures better coordination, stronger quality control, and continuity.
Why it matters: When all services are handled in-house (translation, revision, DTP, quality assurance), coordination is smoother, turnaround times are shorter, and the risk of errors is significantly reduced. Avoiding handoffs between multiple external providers means greater control.
Questions to ask:
- Which professional roles do you have in-house?
- Do you rely only on freelancers or also have internal translators and reviewers?
- Who handles DTP and layout?
Practical example: Aglatech14 has an internal team that includes project managers, vendor managers, linguists, quality specialists, technology specialists, editors, and designers. This allows full internal coordination without depending on external providers for critical services.
10. Verifiable References and Documented Case Studies
It is not enough to say that you have translated for many companies. Concrete references are needed, preferably in your own sector: automotive, automation, energy, packaging, or special machinery. Documented case studies show how the agency addressed specific challenges.
Why it matters: An agency experienced in medical manuals is not automatically qualified for chemical plant documentation or extrusion machinery. Industry specialization makes a difference. Documented case studies show real capability in handling complexity.
Questions to ask:
- Do you have documented case studies for projects similar to mine?
- What challenges have you faced in complex technical projects?
Warning: Refusal to provide references or vague case studies without details on volumes, timelines, and challenges usually indicates a lack of concrete experience.
Conclusion
Choosing a technical translation agency is a strategic decision. It is not just about language skills, but about technical expertise, reliability, the ability to manage complexity, and compliance with regulations.
This checklist does not guarantee a flawless translation, but it significantly reduces the risk of costly surprises. A reliable partner will answer these questions clearly, provide concrete examples, demonstrate transparency, and share documented case studies from the very first interaction.
A reliable partner does more than deliver a translation. They build a tailored process adapted to the specific needs of your project and industry.
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