The Technician Occupations Selection System (TECH) test is used to help select candidates for technical occupations in the following areas: laboratory technicians, telecommunications, engineering design, drafting, GIS, and testing and relay technicians. This test measures skills and abilities critical for effective job performance in the following areas: math problem-solving  using information from prints and drawings, understanding mechanical principles, ability to use symbols and codes to locate objects on a map or diagram or to determine an object’s status, and make decision-making  or troubleshooting through rules application.