Final answer:
To determine if a hard hat fits properly, check for signs of discomfort or incorrect sizing such as binding or irritation of the skin, slipping on the head, or the absence of a suspension system
Step-by-step explanation:
To tell if your hard hat does not fit properly and needs to be adjusted, you can look for a few signs. Firstly, if the hard hat binds or irritates your skin, it indicates that it is too tight and needs adjustment. Secondly, if the hard hat slips on your head, it is a clear indication that it is too loose and needs tightening. Lastly, if the shell of the hard hat is in direct contact with your head without any suspension system, it means that the size is incorrect and needs to be adjusted.
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