Which of the following is NOT a piece of safety equipment for engineers?

A tool belt is primarily an accessory for holding and organizing tools, making it more of an equipment management item rather than a direct piece of safety equipment. While tool belts can contribute to efficiency and organization on the job, they do not provide protection against workplace hazards like the other options listed.

Safety shoes, protective glasses, and hard hats are specifically designed to protect engineers from physical harm, such as falling objects, sharp tools, or exposure to hazardous materials. Safety shoes offer protection for the feet, protective glasses shield the eyes from debris or chemicals, and hard hats guard against head injuries. Each of these pieces of equipment addresses specific safety risks engineers may encounter in various work environments, making them essential for maintaining safety standards on the job.