MSS

To signify a mandatory action

To signify that the instruction manual/booklet must be read

To signify that ear protection must be worn

To signify that eye protection must be used

To signify that an earth terminal must be connected

To signify that the mains plug must be disconnected from electrical outlet for the purposes of maintenance of electrical equipment, in the case of malfunction or when left unattended

To signify that opaque eye protection must be worn

To signify that safety footwear must be worn

To signify that protective gloves must be worn

To signify that protective clothing must be worn

To signify that hands must be washed

To signify that the handrail must be used