ETA TPO technician in precision optics exam guide exam help

ETA Technician in Precision Optics (TPO) is for precision optics technicians working in optical component fabrication areas such as optical shops, optics manufacturers, and quality-control departments for organizations that incorporate precision optics into systems. ETA describes TPO technicians as examining the properties and uses of bulk materials, using equipment and procedures for shaping, polishing, and coating precision optics, using optical instruments and guidelines to verify optical component dimensions and tolerances, and handling, storing, and shipping precision optical components.

ETA Press lists TPO as a stand-alone certification with maintenance required, a 4-year term, hands-on required, 98 questions, a 75% passing score, and 2 hours allowed to test. ETA states that the knowledge component comprises two separate exams totaling 98 questions and that those exams must be taken within a 2-year period. Preparation should cover applied mathematics, safety, technical drawings, precision measurement, material properties, optical component fabrication, shaping, polishing, coating, optical instruments, dimensional inspection, tolerances, quality control, assembly, basic technical skills, work procedures, handling, storage, shipping, and hands-on competency documentation.