Home / Federal careers / WG-3359
Instrument Mechanic
Federal Wage Grade position repairing, calibrating, and maintaining precision instruments including gauges, meters, and measurement devices at federal facilities and laboratories.
What WG-3359 pays
Federal Wage System pay is set by local prevailing wage surveys, so it moves with the wage area rather than a national table.
Wage Grade rates are published per wage area rather than nationally, so the number that matters is the one for the installation you are applying to.
Source: DoD Civilian Personnel Advisory Service wage schedules.
Qualification requirements
OPM's standard for WG-3359, as written.
The qualification standard for this series is not loaded yet.
What this means if you served
- Write the duties, not the billet. OPM credits military experience on the work performed, and does not use rank or pay to judge specialized experience.
- Put the training and certifications you earned in service on the page. They count here.
- Claim your veterans preference on the application. It is not applied for you.
- No positive education requirement here, so qualifying experience can stand in for the education.
How to qualify for WG-3359
1Review Trade/Craft Requirements
WG positions require demonstrated skill in a specific trade or craft. Review the job announcement for required certifications, licenses, and hands-on experience.
2Document Your Experience
WG positions are experience-based, not grade-based. Document your years of hands-on trade experience, apprenticeships completed, and journeyman status if applicable.
3Gather Credentials
Collect your DD-214, trade certifications (welding, electrical, HVAC, etc.), apprenticeship completion certificates, and any specialized licenses required for your trade.
4Build Your Federal Resume
Two pages, the same USAJOBS limit that has applied since 27 September 2025. Lead with hands-on trade experience: the tools and equipment you ran, safety training, the projects you finished, and hours worked per week.
5Apply on USAJOBS
Search for WG positions in your trade specialty, carefully answer assessment questions about your skill level and experience, and submit before the closing date.
Military jobs that map to this series
Precision Measurement Equipment Laboratory (PMEL)
GS-3359 Instrument Mechanic is the trade-side match for PMEL: repair, overhaul, and calibration of precision measuring instruments translate without friction.
Skills that carry over: Instrument calibration, Precision repair, Measurement standards, Tolerance documentation.
Usually opens at: WG-10, WG-11, GS-9.
Fire Control Repairer
WG-3359 Instrument Mechanic covers repair and calibration of precision instruments, matching the fire control optics and measurement side of the MOS.
Skills that carry over: Instrument calibration, Precision measurement, Optical alignment, Fault isolation.
Usually opens at: WG-9, WG-10, WG-11.
Test, Measurement, and Diagnostic Equipment (TMDE) Maintenance Support Specialist
94Hs map directly to GS-3359 Instrument Mechanic, which covers the repair and calibration of precision instruments. The bench-mechanical side of TMDE work transfers without friction.
Skills that carry over: Precision instrument repair, Calibration to tolerance, Mechanical diagnostics, Standards traceability.
Usually opens at: GS-7, GS-9, GS-11.
Your record can qualify you even when your code is not on this list. The crosswalk is a starting point, not the gate.
Typical duties
- Perform skilled trade work in accordance with established standards, specifications, and safety procedures
- Operate, maintain, and repair trade-specific equipment, tools, and machinery
- Read and interpret blueprints, technical manuals, work orders, and specifications
- Inspect completed work for quality, accuracy, and compliance with requirements
- Maintain tools, equipment, and work areas in clean, safe, and operational condition
- Document work performed including time, materials used, and completion status
- Coordinate with supervisors and other trades on project requirements and schedules
- Follow all safety protocols including proper use of PPE and hazardous material handling
- Train and assist lower-grade workers in trade techniques and procedures
- Requisition materials, parts, and supplies needed to complete assigned work
Key competencies
Technical Knowledge
Understanding of trade-specific tools, equipment, materials, and techniques required for the position
Manual Dexterity
Physical coordination and skill in using hands and tools to perform precise work
Safety Awareness
Knowledge of workplace safety procedures, OSHA standards, and proper use of personal protective equipment
Problem Solving
Ability to diagnose issues, troubleshoot problems, and determine effective repair solutions
Quality Control
Attention to detail ensuring work meets specifications, standards, and quality requirements
Blueprint Reading
Ability to read and interpret technical drawings, schematics, diagrams, and work orders
Equipment Operation
Proficiency in operating trade-specific machinery, power tools, and specialized equipment
Maintenance Procedures
Knowledge of preventive maintenance, inspection protocols, and equipment care
Communication
Ability to communicate effectively with supervisors, coworkers, and customers about work status
Adaptability
Flexibility to work in various conditions and adjust to changing priorities and assignments
Words the announcement will use
Use the ones your record actually supports. A rater is matching your experience against the specialized experience statement, and a keyword with nothing behind it does not survive that.
Questions about WG-3359
What is an Instrument Mechanic?
An Instrument Mechanic (WG-3359) repairs, calibrates, and maintains precision instruments including gauges, meters, and measurement devices at federal facilities and laboratories. They ensure critical measurement equipment maintains accuracy and proper function across federal operations.
How much does a federal Instrument Mechanic make?
WG-3359 positions are paid under the Federal Wage System based on local prevailing rates. Journeyman wages (WG-10/11) typically range $27-$40 per hour depending on locality. Annual earnings range $56,000-$83,000. Calibration laboratory specialists may earn premium rates.
What are the requirements for WG-3359 positions?
WG-3359 requires skill in precision instrument repair and calibration. Qualifications include knowledge of mechanical and electronic instrumentation, ability to diagnose malfunctions, calibration techniques, and understanding of measurement standards and traceability requirements.
Can military experience substitute for education in WG-3359?
Yes, military calibration and instrument maintenance experience qualifies. MOSs like Army 94H (TMDE Maintenance), Navy IC (Interior Communications Electrician), or any rating involving precision instrument maintenance provides relevant experience for WG-3359 positions.
What is the career progression for Instrument Mechanic?
Instrument Mechanics progress from helper through journeyman (WG-10/11) and lead positions. Senior roles involve complex instrumentation or calibration laboratory management. Career advancement includes WG-2602 (Electronic Measurement Equipment) or GS metrology positions.
How do I apply for WG-3359 jobs on USAJOBS?
Search USAJOBS for 'Instrument Mechanic' or series '3359.' Positions exist at calibration laboratories, industrial facilities, and research centers. Highlight your precision instrument experience, calibration skills, and measurement knowledge. Veterans receive preference.
Ready to apply for WG-3359?
A rater matches your record against the announcement's specialized experience statement, inside two pages. BMR writes that shape from your own experience: competency headers, real scope, hours per week, and the supervisor detail the rater checks.