Federal job category 3300 covers roles focused on the installation, calibration, maintenance, and repair of precision instruments used in federal operations. These positions include Instrument Mechanics and Technicians who work with devices that measure, control, or record variables like pressure, temperature, flow, and speed. Employees in this category handle instruments with electrical, mechanical, pneumatic, hydraulic, or electronic components, often using specialized test stands and diagnostic equipment to ensure accuracy and reliability.

Most roles fall under the Federal Wage System and are hands-on, requiring a deep understanding of technical schematics, measurement standards, and troubleshooting techniques. Workers may be stationed in laboratories, industrial facilities, or field environments, supporting everything from environmental monitoring to aerospace systems. Whether calibrating gauges, repairing sensors, or aligning control systems, these jobs demand precision, problem-solving skills, and a commitment to maintaining operational integrity. GS-3300 positions are essential to ensuring that federal equipment performs within exact specifications for safety and efficiency.