Final answer:
Point of operation guards are essential safety features in machinery, and the three main types are fixed, interlocked, and adjustable.
Explanation:
Point of operation guards are crucial safety devices used in machinery to protect operators from hazards. The three main types of point of operation guards are fixed, interlocked, and adjustable. Fixed guards are stationary, interlocked guards are designed to shut off the machine when opened, and adjustable guards can be modified to accommodate different tasks.
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